Mayhew Pro 10400 1/8-Inch Reg Cape Chisel Also known as a slot chisel Used to cut flat grooves for keyways or slots meets or exceeds ASME B107_401 and US govt GGG-C-313D Made in the USA. Lifetime Warranty. Made of alloy steel and heat treated for long life Also known as a slot chisel Used to cut flat grooves for keyways or slots Narrows to a flat cutting end for precision Unlimited Lifetime Warranty Black oxide finish for additional rust prevention