ER20 Collet 29/64" (.453-.438) Mechanical Coolant Seal
ER20 Collet 3.0mm (.118-.098)
ER20 Collet 3.5mm (.137-.098)
ER20 Collet 3/16" (.187-.156)
ER20 Collet 3/16" (.187-.183) Mechanical Coolant Seal
ER20 Collet 3/32" (.094-.078)