Crush and smash glass into frit and powder using the Aanraku Frit Maker Piston. Overall height: 11 inches, piston diameter: 3 inches, chamber depth: approx. 5 inches. The Aanraku Frit Maker Piston is seven lbs. of steel and it's heavy duty walls and impact head are made to last for years. Turn your scrap glass into inexpensive frit in seconds! We recommend the Aanraku Frit Sifter set with this purchase.