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Polished stainless steel vacuum grinding jars for planetary ball mills. Each jar set includes grinding jar, lid, silicon vacuum sealing gasket and a mixed sizes of stainless steel grinding balls (refer to detail table below). See our other accessories for optional vacuum pump. Total weight is around 5 lbs. Compatiable with our PQ-N2 4x500ml planetary ball mills.

Polished stainless steel vacuum grinding jar jacket for planetary ball mills. These jackets are required if you want to use jars other than stainless steel in a vacuum condition. Each set includes grinding jar jacket, lid and silicon vacuum sealing gasket. Please see our other accessories for optional vacuum pump. Total weight is around 2.5 lbs. Compatiable with our PQ-N2 4x500ml planetary ball mills.