Grinding container Spex 99.5% alumina ceramic lined, steel lid and aluminum dish are lined with alumina ceramic plates, puck is solid alumina ceramic. 6.3 inch diameter x 3.2 in. high, 11 lbs, 15.2cm x 8cm, 5kg, nominal volume 170mL, recommended grinding load 15-40mL, includes puck, dish with O-ring gasket, and lid