ER40 Spanner UM TYPE And C TYPE For ER40 Nut Collet Chuck Pack of 1 Style:C TYPE but 80 mm and 100

but 80 mm and 100 mm Cutters are usually standard in this range

suitable for the KORLOY Brand

you can use  JDMW120420 from Mitsubishi Brand Insert into this

63 mm Bull Cutter For Die And Mould Facing Cutter Suitable For RPMT1204 R6 Of Mostly Brands

the flute length remains the same as the double diameter

ER40 Spanner UM TYPE And C TYPE For ER40 Nut Collet Chuck Pack of 1 Style:C TYPE but 80 mm and 100ER40 UM AND C TYPE Spanner Wrench is made from high quality alloy steel. The thick material allows high torque without bending, 4 point contact ensures no distortion of the collet nut while tightening, the ER40 Wrench works on all of our UM Type and UM type collet chucks that take ER40 collets.