I have three (3) New specialty drill bits to offer and if I have done my homework correctly they are as follows " 1st is a 7/16" diameter with a threaded shank having 7/16 x 14 threads This bit is a router bit made of High Speed Steel (HSS) as you can see its so new it still has the plastic coating on the tip having overall length of 3.25", 2nd is Counter sink bit that was made in the USA by CARD TOOL CO. has a 82 degree counter sink for flat head screws, 1/2" cutting diameter,made of High Speed Steel (HSS) having overall length of 2.25" with 1/4" shank. 3rd is a counter bore bit that is 3/4" in diameter with a 1/4" shank and over all length of 1 7/8" made of tool steel