The KIMBLE Dounce Tissue Grinder Set manufactured by DWK Life Sciences contains one large clearance pestle for the initial sample reduction and one small clearance pestle\ for the final homogenate.
Specification
Material: Glass Pestle A clearance: 0.0030-0.0050 in. Pestle B clearance: 0.0005-0.0025 in. Working volume × L: 2 mL × 60 mm