U-Drills 3xD & 4xD for SPMG and WCMX Inserts by APT

Our APT brand U-Drills are through coolant from the back or side and have nickel based coating making them more durable for longer tool life. U-drills can be off-set to cut slightly undersize or oversize, note the radius size of the recommended insert, using different rad size will change the cutting diameter