ER20 Collet 13.0mm (.511-.492) Mechanical Coolant Seal
ER20 Collet 13/32" (.406-.375)
ER20 Collet 13/32" (.406-.391) Mechanical Coolant Seal
ER20 Collet 13/64" (.203-.199) Mechanical Coolant Seal
ER20 Collet 15/32" (.469-.437)
ER20 Collet 15/32" (.469-.453) Mechanical Coolant Seal