The BKDF is manufactured by SIAM Ringspann. It is a taper collet flange mandrel BKDF, that works as a complete clamping fixture. Features of the BKDF includes clamping diameter range from 11,9 mm to 129,6 mm, and running accuracy of ≤ 0,01 mm. The BKDF is designed for or thin-walled or solid work pieces. It also allows hand clamping, as option.