Shank Diameter: 10mm (Suitable for 10mm diameter electric drill)
Suitable for drill: Plywood, Laminates, Composite, Gypsum, Rubber, Plastic, Hardwood etc.
Features: Wide range of uses, hole diameter size can be adjustable. Alloy blades, cutting smooth, the hole wall are smooth and no glitches, good effect of the straight roundness, opening hole depth is 30mm.
Note: It can not be used for drill metal or stone.