To form 31 mm standard sample disks for XRF. Set includes evacuable die body, base, plunger, two polished steel pellets, O-ring vacuum seals, and knock-out ring for sample disk extraction. Load limit 50 tons (45.4 metric tons); weight 6.6 lbs (3 kg). Compatible with SPEX SamplePrep 3619 and 3619A Spec-Caps. 31 mm Tungsten Carbide Pellets available (3623C).