10cm Selenite Crystal Bowl Gypsum Bowl High Quality - Etsy
Flexible Mixing Bowl - Industrial Plasters
2pcs Dental Rubber Mixing Bowl, Lightweight Reusable Flexible Not Sticky Bowls with Non-Slip Bottom for Alginate Gypsum Plaster 4.3 x 4.3 x 2.4in (Medium) : Amazon.co.uk: Home & Kitchen