This package carries (a):

(a) 3 Pieces of F25 (25 mm / 1") 

 Diamond Brazed Ogee / Roman Bull nose Router Bit for 25 MM (1") Thick or High stone concrete travertine (5/8"-11 Female Thread arbor). 

-ideal speed of grinder/polisher: 3500-4500 RPM.

- please don't use with high speed grinder/polisher.

-with water feed hole, can be wet use.