Features: 5PC CAT40 ER32 Chuck: 1. Gage or projection length of ER32 is 2.75'' 2. Accuracy in couple tenth. 3. Fully ground flange and V-groove - easy on tool changers for less spindle and changer maintenance 4. V-Flange CAT 40 is production balanced to high speed spindle turning and meet standard industrial needs 5. High Speed True Balance to 20K RPM 6. Hardened and ground to ensure maximum accuracy 7. Through spindle coolant capability from pull stud to collets 8. All chucks are passed hardness and anti crack test. Low strength steel could lead crack and rust very soon, especially by the inside pocket area, make sure avoid those bad steel chucks. Time will tell. 12PC ER32 Collets Set: Size: 1/8''; 3/16''; 7 / 32, 1 / 4''; 5/16''; 3/8''; 7/16''; 1/2''; 9/16''; 5/8''; 11/16''; 3/4''. T.I.R.: 0.0003" or 5um Special angled slots increase rigidity Better overall balance of tool holder assembly Protects tool holder from contaminants Use with any standard ER collet chucks for coolant-thru tool applications. Specification: Condition: 100% New Item Type: Collet Chuck Set ER32 Collet Size: 1/8''; 3/16''; 7 / 32, 1 / 4''; 5/16''; 3/8''; 7/16''; 1/2''; 9/16''; 5/8''; 11/16''; 3/4'' T.I.R.: 0.0003" or 5um Package List: 5 * Chuck Holder 12 * Collets 1 * Wrench 5 * Rivet Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.