this 3 piece titanium nitride coated high speed steel drill bit set allows precision drilling of 24 different size holes. the step drill bits feature a double fluted design for optimum speed and accuracy, made from high speed steel with a titanium coating for reduced friction and heat, heat treated and highly polished, titanium coating for cooler running, 1/4 inch shank on these step drills prevents slipping in the chuck.
each step drill has 2 flutes to give a faster, smoother cut and the tapered face of the next cutter automatically deburrs the finished hole, each step drill has size markings for easier hole identification. ideal for thin metals, steel, aluminium, copper, brass, fibreglass, pvc etc. making these step drills useful for many plumbing, electrical and automotive tasks. no pilot holes or pre-drilling required. automatically deburrs holes as you drill. the set comes complete with a nylon storage pouch.
contents: 1t – 4, 6, 8, 10, 12mm; 2t – 3, 4, 5, 6, 7, 8, 9, 10, 11mm; 3t – 4, 6, 8, 10, 12, 14, 16, 18, 20mm; 1pc – nylon storage pouch.