These Irwin® Jigsaw Wood Cutting Blades are made from carbon steel for use on softer materials such as wood, laminated chipboard, and plastics.They have a universal shank and 3 sided, fleam ground teeth for fast cut and clean finishes in all wood applications. Produces fast straight cuts in hard and soft wood, plastics, particleboard 6-60 mm (1/4 - 2 3/8in). Specifications: Length: 100mm.Pitch 6 , Side Ground, Wood Cutting.Supplied in a pack of 5.Additional Information:• Type: Wood• Shank: U• Pack Qty.: 5• Tooth Pitch (TPI): 6• Working Length (mm): 82• Popular Reference: U101D