HHIP 3900-5213 ER-25 Spring Collet, 3/16"
ER-25 3/16" Spring Collet ~ Range of collet is .16-.20. ~ 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.