Feature

●Increase the cutting speed through automatic centering to prevent walking
●High-speed steel material, more durable. Coated with nitride to reduce friction and cool
●No pilot hole is required, and the hole can be deburred automatically when drilling.
●Special stepped structure can drill holes of different sizes, 1 step drill can be used as 1 box drill.
●Combined with water cooling, it can effectively extend the service life of the drill bit. The recommended drilling speed is 250-400. It is widely used to cut holes in various materials, such as thin steel plate, wood, thin iron, aluminum alloy, insulation board, PVC board, etc.


Description

Remove debris faster and discharge particles easily
Feature:
1. High-speed steel material, more durable.
2. Coated with nitride to reduce friction and cool
3. No pilot hole is required, and the hole can be deburred automatically when drilling.
4. Special ladder structure, can drill holes of different sizes,
5. One step drill can be used as a box of drill bits.
6. With water cooling, it can effectively prolong the service life of the drill bit. The recommended drilling speed is 250-400. It is widely used to cut holes in various materials, such as thin steel plate, wood, thin iron, aluminum alloy, insulation board, PVC board, etc.

specification:
Type: Spiral step drill bit
Material: High speed steel
Coating: nitride coating
Handle: triangle
Scope: thin iron plate, aluminum plate, insert plate, PVC plate with 0.4mm thickness in wood.
4-12mm: 4-6-8-10-12mm 5 steps
4-20mm: 4-6-8-10-12-14-16-18-20mm 9 steps
4-32mm: 4-6-8-10-12-14-16-18-20-22-24-26-28-30-32mm 15 steps
6-30mm: 4-6-8-10-12-14-16-18-20-22-24-26-28-30mm 14 steps