ER40 Collet 3/16" (.187-.156)
ER40 Collet 3/4" (.750-.719)
ER40 Collet 3/8" (.375-.344)
ER40 Collet 3/8" (.375-.359) Mechanical Coolant Seal
ER40 Collet 31/32" (.969-.938)
ER40 Collet 4.0mm (.157-.118)