Mini wood hand drill chuck for jewelry tool micro twist bit
Chuck Clamping Range:0.3-3.2mm
High precision,can clip 0.3 -3.2mm drill bit.
Material: HSS / High Speed Steel
Surface Treatment: Titanium Coated.
shank size: 1/4″ hex shanks
Diamond Welded Tip for Greater life and Durability
Reverse Spiral Thread Delivers Continuous Water Feed for Longer Life and Increased Speed
Core Ejection Slot Removes Plug for Repetitious Holes