Perfect Seal Collets (PSC) allow for coolant through the cutting tool. They can be used with MEGA Double Power Chucks, Hydraulic Chucks, and New Hi-Power Milling Chucks.
ER nuts are basic nuts with surface treatment for friction reduction. They have slots on the outside diameter and use a spanner wrench for nut tightening.
The Perfect Jet Collet, also known as PJC, is the perfect solution for achieving optimum end milling operations. Utilizing a peripheral coolant supply minimizes the loss of coolant caused by centrifugal forces during spindle rotation.