MKM-RBA424T25 – Pack of 25 blades.            4″ x .025″ x 24tpi – 1/2″ Shank     Specially designed bi-metal blades for use in pneumatic saws for thin sheet metal!  Features & Benefits: Fine teeth for cutting thin metal Bi-Metal Cobalt construstion Made in the USA Used mostly for auto body, muffler shops, or other metal fabricating shops    Applications: Thin sheet metal, automotive body and muffler shops, metal fabricating shops.                   Pack of 25 Blades