Ball Bearing Nut Lexis Ball Bearing Collets manufactured at par with International Standards and companionable with regular ER collet chuck holders. At the time of application, reduced friction allows a higher clamping pressure to be applied. In addition the friction between the collet and the nut when tightening and loosening is almost excluded due to the cone and release flange in the ball bearing collet nut, which remains stationary relative to the collet thereby almost eliminating friction between the collet and the nut when tightening and releasing the collet. For more details of Collet Nut Dimensions & Lock Nut Specifications given in the image. Ball Bearing Nut Clamping Nut Lock Nut Lexis Nut Lexis Ball Bearing Nut ER16 Ball Bearing Nut ER20 Ball Bearing Nut ER25 Ball Bearing Nut ER32 Ball Bearing Nut ER40 Ball Bearing Nut ER50 Ball Bearing Nut