Mandrel/Nosepiece Set Compatible Tool Type Thread Setting Tool Compatible Insert Type Rivet Nuts Compatible Internal Thread Size #10-24 #10-32 1/4 in-20 3/8 in-16 5/16 in-18 Compatible External Thread Size #10 1/4 in 3/8 in 5/16 in Material Steel Overall Length 4 in Product Type Mandrel and Nosepiece Set Compatible with Grainger Part Number 4BB23 Compatible with Manufacturer Model Number 4BB23 Includes -