Features:

• Good quality: 100% brand new and good quality, sharp and durable.
• The hardness, wear resistance and corrosion resistance are good.
• Clever design: there is a small screw inside it, the attached small wrench can twist it, the small screw can adjust the length of drill bit.
• Function: it is suitable for drilling machines with chuck, for drilling on hard wood or wooden floor.

Specifications:

• Material: the drill bit: HSS4241; Chamfering device: 45#steel
• Handle shape: Hex handle
• Handle diameter: 6mm
• Drill bit diameter: 001:2.5mm; 002:3.15mm; 003:3.65mm; 004:4.5mm

Package Included:

• 4pcs Round shank taper hole woodworking drill bits
• 1pce Small wrench   Reference:14110048001