The heavy duty porcelain construction is resistant to chips and cracks. Grinding surface of the rounded end of the pestle is unglazed for precise grinding and crushing Designed for use in professional laboratories, but is an ideal choice for science classrooms and household use., Pestle measures 7., 5 in length, and the rounded grinding end measures 2 in diameter. 60mm Glass Laboratory Mortar and Pestle Pill Crusher Pharmacy Replacement Mortar and Pestle Set REPLACEMENT PART || Replacement pestle, designed for use with Eisco Labs 400ml Mortar & Pestle set (CH0541E). Mortar is not included PORCELAIN || Pestle is made of solid porcelain Pestle is made of solid porcelain. Grinding surface of the rounded end of the pestle is unglazed for precise grinding and crushing. Mortar is not included Replacement pestle, designed for use with Eisco Labs 400ml Mortar & Pestle set (CH0541E). Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. The heavy duty porcelain construction is resistant to chips and cracks. Designed for use in professional laboratories, but is an ideal choice for science classrooms and household use REPLACEMENT PART || Replacement pestle, designed for use with Eisco Labs 400ml Mortar & Pestle set (CH0541E). Porcelain Pestle EISCO Replacement Pestle, 7 Length - For- Eisco Labs Nigeria Pill Crusher Pestle