Our grinding cup can be used for grinding 7mm-25mm button size. Other sizes available on request.
Tapered Bit-Tapered button bit
Taper button bit as small hole bit is different with thread button bit as long hole bit to use taper
Thread Button Bits: Thread sizes:R25,R28,R32,R35,R38,T38,T45,T51,ST58,ST60,GT60 Head diameters:33m
Company: Hubei Superdrill Equipment Co.,Ltd
Add: Building 3, Rainbow road,No.188 ; wuhan ;Hubei province