This Priory 400 Tank Cutter, for Hand Brace/Drill Stand, has a straight shank with 3 flats upon it to ensure a positive drive when used in 3 jaw chuck. The 400 is suitable for use in a handheld brace or drill stand, and the cutting blade is manufactured from heat-treated high-speed steel. The tank cutter has a high-speed steel pilot drill and is suitable for use on most tank materials. Specifications Capacity 25 - 125mm (1-5 in). Shank Straight. Cutter H.S.S.