Tandy Leather 3009-00 Diamond Hole Chisel SetPunch perfect holes every time when sewing your projects. Keep three sizes of chisels in easy reach with this finished with a black electrophoresis coating to prevent corrosion and provide wear resistance. Set includes one handle and ten interchangeable tips having diamond shaped punches with 3 32" (2. 3 mm), 1 8" (3. 1 mm) and 5 32" (3. 9 mm) spacing. For best results use with the Professional Cutting Board #3465 00 or Poly Cutting Boards #3461 00.