Step Bit Kit · 4-Piece Set, 1/8 in to 1-3/8 in Hole Range · TiN-Coated HSS with Split-Point Tips · IDEAL 35-520
What this product is for
The IDEAL 35-520 is a 4-piece electrician’s step bit kit for drilling clean, repeatable hole sizes in sheet metal, stainless steel, brass, cast iron, plastic, wood, boxes, panels, and enclosures. It combines four step bits to cover common electrical trade hole sizes from 1/8 in to 1-3/8 in (3.2 to 35 mm).
Use for
Use this kit for enlarging knockout openings, drilling control panels, junction boxes, cabinets, and general electrical fabrication where multiple hole sizes are needed without changing between many separate twist bits. The split-point tips are intended for faster starts, and the double-fluted design helps with chip removal and smoother cutting.
Avoid for
Avoid using these bits where a hole saw, knockout punch, or annular cutter is the better choice for thicker material, structural steel, or production drilling beyond the bit’s intended range. This kit is not impact rated, so it is better suited to standard drill use rather than repeated impact-driver drilling.
Best for
Best for electricians, panel builders, maintenance teams, and contractors who regularly drill a range of conduit and fitting entry sizes in metal enclosures and want one kit that stays organised in the truck or gang box.
Installed in
Typically used on electrical panels, junction boxes, cabinets, troughs, control enclosures, and fabricated metal parts in commercial, industrial, and service work.
Why this product exists
This kit reduces bit changes by combining four step bits in one case and covering a broad hole range with radius-blended steps. For trade use, that typically means faster setup and fewer separate bits to carry for common electrical drilling tasks.
Typical guidance only: actual cutting speed, finish, and bit life depend on material thickness, drill speed, lubrication, and operator technique.
Compared with similar products
Compared with a single step bit, this kit covers more common hole sizes across four tools. Compared with standard twist bits, step bits are commonly used for cleaner enlargement in thin materials and sheet metal. Compared with quick-change kits, this version is a conventional multi-bit set supplied in a hard case.
Specifications
- Manufacturer part number: 35-520
- Brand: IDEAL
- Product type: Electrician’s step bit kit
- Kit size: 4 pieces
- Included bits: 35-511, 35-513, 35-515, 35-517
- Hole size coverage: 1/8 in to 1-3/8 in (3.2 to 35 mm)
- Individual bit ranges: 1/8 in to 1/2 in, 1/4 in to 7/8 in, 1/4 in to 1-1/8 in, and 1/4 in to 1-3/8 in
- Bit material: High-speed steel (HSS)
- Coating: Titanium nitride (TiN)
- Tip style: Split point
- Flute design: Double fluted
- Shank compatibility: Fits standard drill chucks; distributor listings also indicate 1/4 in and 3/8 in shank diameters across the kit
- Impact rated: No
- Case: Hard storage case included
- Warranty: Limited 1 year
Minimum Order $20
We accept the following payment methods:

Credit Card can offer cardholders convenience, security, rewards, and the opportunity to build a healthy credit history.
Click here for Contractor Cash Account
Trade Credit is a standard financing option for contractors and construction companies to obtain supplies and keep their projects moving. We offer 30-day credit terms to trade contractors on approved applications only.
Click here for Contractor Credit Account 
(Contractor Accounts)
Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas
(All Other Accounts)
Standard Shipping-Free on orders over $499
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.




