|Designed for operating in angle drills with 1/4-28 threads and in the AT441SLS Micro Stop Countersink. Has 1/4-28 threaded shank. Cutter angle 100°. AT455D-4 has 7/16" dia. cutter head. Use with AT484 pilots.|
Received this with other items in a timely manner but it is missing the small set screw (allen screw) to secure the pilot bushings. Aggravating to say the least while trying to find a brick and mortar hardware store that has this small set screw. Therefore at this time I cant use it or review its performance.