ER40 Collet 7/16" (.437-.421) Mechanical Coolant Seal
ER40 Collet 7/32" (.219-.187)
ER40 Collet 7/8" (.875-.844)
ER40 Collet 8.0mm (.314-.275)
ER40 Collet 8.5mm (.334-.315)
ER40 Collet 9.0mm (.354-.314)