HHIP 3900-5218 ER-25 Spring Collet, 3/8"
ER-25 3/8" Spring Collet ~ Range of collet is .354-.393. ~ Made of high grade tool steel. ~ Hardened and precision ground. ~ Meets or exceeds Federal specifications. ~ Major diameter is 1.020". ~ Overall length is 1.390". ~ Collet must be placed into collet chuck nut before inserting into collet chuck.