High Quality Extension Bars C25-ER20A-150L ER Collets Extension Bar, graving machine special straight shank cutter, shank diameter is divided into (10/16/20/25/32/40 mm), the chuck is equipped with special ER chuck for engraving machine, clamping range can be selected according to their own needs purchase. Material: 40Cr Accuracy: 0.01mm Support non-standard production Our TeLi mainlyinkindsofcollets, kindsoftoolholders, BTtoolholders, CATtoolholders, DATtoolholders, NTtoolholders, HSKtoolholdersseries, boringheadseries, tappingcollets, livecenters, drillchucksseries, andsoon. Product Show: Company Information SISHUI TELI TOOL CO., LTD. SISHUI TELI TOOL MANUFACTURING CO., LTD locates in SISHUI Economic Developing Zone.Our products can be divided into 3 types: the first is various Tooling System for CNC MachineTools, includingprecision Tool Holders, Spring Collets, Rough or Precision Boring Heads and Tapping Collets;The second is otherstandard machinetool accessories, such as all kinds of Live Centers, Drill Chucks, etc.; The third is the special machineparts on CNC machine tools asclients' samples or drawings. Our Company Our Factory Equipment: Packaging