#92 • (6) Triumph Twist Drill Co. Reduced Shank Drill Bits. Part of Northern Minnesota Machinery Sales (timed auction by Premier Machinery Auctions) High bid $130.00 Status: Sold 1/2" Shank, HSS, BLK/BRZ OXD, (3) 15/16", (2) 1-1/16", (1) 1-1/8".