DOUBLEL Sink hole Counter sink Drill Bit Hole Punch Step Counter sink Router Bit Professional 8mm Shank Counter sinking Drill Woodworking Tools

Blade material: carbon steel. Color: Silver orange. The package includes: 1 x drill bit. Rod diameter: 8mm. Rod type: Round rod. Color: Silver orange. Chamfer material: 45 steel. The package includes: 1 x drill bit. Rod diameter: 8mm. Blade material: carbon steel. Material: YG8 alloy drill), 45 carbon steel. Rod type: Round rod. Product selling point: 1. Application: Used for spiral countersunk hole of aluminum alloy. 2. This step drill is used for countersunk holes and opening holes of aluminum screws. 3. It is durable, excellent material and fine workmanship. 4. Due to the surface spray treatment, the step drill has wear resistance