ER20 Collet 5/16" (.312-.297) Mechanical Coolant Seal
ER20 Collet 5/32" (.156-.125)
ER20 Collet 5/32" (.156-.152) Mechanical Coolant Seal
ER20 Collet 6.0mm (.236-.196)
ER20 Collet 6.0mm (.236-.232) Mechanical Coolant Seal
ER20 Collet 6.5mm (.255-.236) Mechanical Coolant Seal