The finest set of countersinks that you will ever use. Made in the USA, this set is presented in a handsome hardwood case and includes the following: 1 x 3/8" and 1 x 1/2" plug cutter, two stop collars and 5 countersink bits to suit drill sizes 6, 8, 10, 12 and 14. Drill bits are tapered to facilitate screw grabbing.