5Pcs Heavy Duty HSS Step Drill Bit Set – Spiral Grooved Cone Drill for Sheet Metal, Stainless Steel, Aluminum & Plastic – Quick Chamfering & Deburring Tool
Key Features
⚡ FASTER DRILLING & LESS FRICTION: The advanced spiral grooved design rapidly ejects chips and debris, reducing heat buildup. This allows for 30% faster penetration through metal compared to standard straight-flute step bits.
🔩 HEAVY DUTY HSS CONSTRUCTION: Crafted from premium High-Speed Steel (HSS) with a fully ground surface. Hardened and treated for maximum durability, making them ideal for drilling stainless steel, iron, copper, aluminum, and PVC.
🛠️ NO CENTER PUNCH OR PILOT HOLE NEEDED: The self-starting split point tip prevents walking (wandering) on curved or smooth surfaces. Drill precise holes instantly without pre-drilling.
📏 5 POPULAR SIZES FOR VERSATILE JOBS: Includes a range of metric/imperial steps (See chart below). Perfect for electrical boxes, automotive panels, exhaust pipes, chassis work, and metal fabrication.
🔧 BURR-FREE & DEBURRING FUNCTION: Each step acts as a chamfering tool. As you drill through the final layer, the next step bevels the top edge, leaving a clean, professional finish.
Product Description
Upgrade Your Toolbox with Professional Metal Drilling Performance
Stop struggling with swapping multiple twist bits or using hole saws that leave jagged edges. The 5Pcs Heavy Duty HSS Spiral Grooved Step Drill Bit Set is your all-in-one solution for drilling holes from small pilot sizes up to large diameters in seconds.
Why Spiral Grooves?
Standard step bits trap shavings, causing overheating and bit dulling. Our spiral flute design actively pulls metal shavings up and out of the hole. This clears the cutting edge, drastically reduces friction, and prevents the bit from seizing in thick metal.
Engineered for the Trades
Whether you are an electrician drilling into breaker panels, an auto mechanic modifying downpipes, or a HVAC technician cutting through unistrut, these bits deliver. The HSS material maintains its edge even under high-torque drilling.
No More "Walking"
The 135-degree split point tip bites immediately. Drill into angled surfaces, thin sheet metal, or plastic enclosures with absolute control.
Package Includes:
5 x HSS Step Drill Bits (Sizes as per image/chart - e.g., 1/4" to 1-3/8")
Tip: Store in a dry place. Use cutting oil for extended bit life on stainless steel.
Product Specifications
| Specification | Details |
|---|---|
| Material | Heavy Duty High-Speed Steel (HSS) |
| Flute Type | Spiral Grooved (Chip Ejection) |
| Tip Type | Split Point / Self-Centering |
| Compatible Materials | Sheet Metal, Stainless Steel (<2mm), Aluminum, Copper, Plastic, Wood (soft) |
| Shank Type | Round / 1/4" Hex (Specify based on actual stock) |
| Application | Deburring, Enlarging holes, Drilling thin metals |
