Adapter Spex multiple-sample holds seven vials 1/2 inch (12.7mm) diameter for simultaneous running in 8000M Mixer/Mill, suitable vials include SPEX SamplePrep 3111, 3114, 3116 and 3117, vials run at one time should be same length, can be used in 8000D Mixer/Mill with 3116 vials, or with 3111, 3114, and 3117 vials if 8012 adapter is also used