ER20 Collet 3/8" (.375-.344)
ER20 Collet 3/8" (.375-.359) Mechanical Coolant Seal
ER20 Collet 31/64" (.484-.469) Mechanical Coolant Seal
ER20 Collet 4.0mm (.157-.118)
ER20 Collet 4.5mm (.177-.137)
ER20 Collet 5.0mm (.196-.157)