Boring Bar Selection Guide Each unique clamping system offers product options to fill yourspecific toolholder needs. Find the illustration that fits your applicationA-DCLNProduct Name and navigate to the corresponding page to get the correct solution. Application Illustration Page: C56 Page Number D-Style Clamping D A-DCLN A-DDPN A-DDQN A-DDUN 95° 117,5° 107,5° 93° Page: Page: Page: Page: C56 C56 C57 C57 One-piece clamp assembly holder for A-DTFN DVUN A-DWLN use with negative style inserts. An extremely rigid 90° 93° 95° clamping system. The Page: Page: Page: tool is protected by a carbide shim. C58 C58 C59 P-Style Clamping P A-PCLN A-PTFN A-PWLN 95° 90° 95° Page: Page: Page: C60 C60 C61 Lever-type clamping system for negative indexable inserts with hole to DIN 4988 and positive round inserts more than 20mm in diameter. Inserts with one- and two-side chip control geometries have positive rakes from 6° to 18°. Advantages of this system are fast insert changes and no interference with chip flow. C52 widia.com