Hardened Steel Grinding Container: Grinding container with puck, dish, and lid made of 52-100 hardened tool steel. 6.9 in. diameter x 2.9 in. high, 17.5 lbs. (17.5 cm x 7.5 cm, 8 kg). Nominal volume 340 mL, recommended grinding load 20-50 mL. Includes puck, ring, dish with Oring gasket, and lid....