Pack contains five 3 1/2in. wood scrolling Hackzall blades, designed to maximize the performance of the M12 Hackzall, Item# Item# 334222. U.S.A. Blade Application: Wood scrolling, Blade Size (in.): 3 1/2, Blades (qty.): 5, Blade Type: Hackzall Thinner kerf design allows for 35% more cuts per charge than standard Sawzall blades