Zona 4 in 1 Razor Saw Set Versatile set for all kinds of cutting 4 popular interchangable blades Blades are: 52, 32 & 24 TPI razor blades Built in 24 TPI \"push style\" keyhole saber blade Zona 4 in 1 Saw Set Complete For cutting wood, plastic, or soft metal. 11\" (28 cm) Overall Length. Blades are replaceable. 36-050 Ultra Thin Kerf Blade TPI (Teeth per Inch): 52 Kerf (Thick): .008\" (.203 mm) Length: 4 1/2\" (11.4 cm) Depth: 7/16\" (1.1 cm) 36-408 Keyhole Blade TPI (Teeth per Inch): 24 Kerf (Thick): .022\" (.558 mm) Length: 2 1/4\" (5.7 cm) Depth: n/a 36-458 Large Saber .022\" Blade TPI (Teeth per Inch): 24 Kerf (Thick): .022\" (.558 mm) Length: 4 1/2\" (11.4 cm) Depth: n/a 36-555 Fine Kerf Blade TPI (Teeth per Inch): 32 Kerf (Thick): .010\" (.254 mm) Length: 5 1/2\" (13.9 cm) Depth: 13/16\" (3 cm)