5/8″ Brown & Sharpe #9 Taper Round Collet ~ Made of high grade tool steel. ~ Precision ground and hardened. ~ <= .0008″ TIR. ~ A is 1.067″. ~ B is 0.900″. ~ L is 4.00″. ~ Drawbar end thread is 1/2″-13. Made of high grade tool steel. Precision ground and hardened. <= .0008″ TIR. ~ A is 1.067″. B is 0.900″. ~ L is 4.00″. Drawbar end thread is 1/2″-13.