Squeezer Die: 3/8 in Head Lg, For 1/8 in Rivet Head Dia, Tubular Die, Fits 5/16 in Rivet Dia, Steel

Die sets attach to the U-shaped jaws of solid and tubular rivet tools and compress the rivet as the jaws squeeze together. They fit specific rivet sizes and head types. These interchangeable sets allow one tool to set different rivets.