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 with 3 sided, fleam ground teeth for fast cut and clean finishes in all wood applications.Fast, coarse cuts in hard and soft wood, plastics 5-60 mm (7/32 -2 3/8in). Specifications: Length: 100mm.Pitch: 8 Standard, Wood Cutting.Packs of 5.  Additional Information:• Type: Wood• Shank: U• Pack Qty.: 5• Tooth Pitch (TPI): 8• Working Length (mm): 74• Popular Reference: U111C