https://www.globalgilson.com/gilson-tapping-8-inch-sieve-shaker Gilson SS-8R Tapping 8in Sieve Shaker can hold up to twenty 8in (203mm) half-height test sieves with pan or ten full-height sieves with pan. Characteristics of individual materials may affect the useful particle size range. SS-12R Gilson Tapping Sieve Shaker holds up to thirteen half-height, ten intermediate height or six full-height 12in (305mm) sieves with pan. 12in sieves have over twice the effective sieving area as 8in sieves. Characteristics of individual materials may affect the useful particle size range. An adapter is included, allowing use of 8in sieves in the SS-12R. For more information go to www.globalgilson.com