ER20 Collet 4.0mm (.157-.118)
ER20 Collet 4.5mm (.177-.137)
ER20 Collet 5.0mm (.196-.157)
ER20 Collet 5.0mm (.196-.193) Mechanical Coolant Seal
ER20 Collet 5.5mm (.216-.212) Mechanical Coolant Seal
ER20 Collet 5/16" (.312-.281)