Otto Bilz [India] Private Ltd offers Chamfer Rings with Cylindrical Bores. Otto Bilz [India] Private Ltd manufactures Chucks for Thread Cutting, High Precision Holding Systems for Tapping, Drilling and Reaming, CNC-Precision holding systems. The Chamfer Rings with Cylindrical Bores are identical to the common tooling dimensions. Chamfer ring may also be used on tools of other tool suppliers. These rings are designed to accept Insert to ISO - standard; exception - Ø22 - 27 and Ø27 - Morris specific ISO The Insert are adapted to different Insert pockets of the rings. This means that the nominal width of chamfer over the entire range can be achieved.