Button Bit type :

A. Taper button bit

best selling size:30mm,32mm,34mm,38mm,40mm with 7 button,8 button.

B. Thread Button Bit

R25--38mm, R25--41mm, R28--38mm, R28--41mm

R32; R32--45mm, R32--76mm, R32--89mm, R32--102mm

T38; T38--64mm, T38--76mm, T38--89mm, T38mm--102mm

T45; T45--89mm, T45--102mm

T51; T51--89mm, T51--115mm,  T51--127mm

Notes:Non standard also can be available as your designs.

if you have any questions ,please don't hesitate to contact with me