#60 • (5) Triumph Twist Drill Co. Reduced Shank Drill Bits. Part of Northern Minnesota Machinery Sales (timed auction by Premier Machinery Auctions) High bid $140.00 Status: Sold 1/2" Shank, BLK/BRZ OXD, 15/16", 7/8", 1-1/16", 1-1/8", 1-3/16".