This Replacement Nose Piece Set For DCF403 3/16" Rivet Tool contains all 4 compatible nose piece sizes including 3/32", 1/8", 5/32", and 3/16". Each nose piece is etched with a number signifying each one's corresponding diameter to make identifying each piece easy. Simply use the Rivet Size Chart on the tool to see which nose piece matches the rivet. Once the desired size is selected, store your nose pieces on the rear of your rivet tool for quick and convenient access on the job. Tool sold separately.