ER20 Tap Collet .381x.286 9.7x7.3 3/8" Mechanical Seal
ER20 Tap Collet .394x.315 10.0X8.0 M10
ER25 Collet 1/16" (.063-.047)
ER25 Collet 1/2" (.500-.469)
ER25 Collet 1/2" (.500-.484) Mechanical Coolant Seal
ER25 Collet 1/4" (.250-.219)