Set of 4 silicone mold tray 1) XXLarge: 24cm х 2.3cm (9.5in х 0.9in) 2) Large: 15.5cm х 1.7cm (6.1in х 0.7in) Inner size: 14cm(5.5in) 3) Medium Size: 11.5cm х 1.7cm(4.5in х 0.7in) Inner size: 10cm(3.9in) 4) Small Size: 9cm х 1.4cm(3.5in х 0.6in) Inner size: 8cm(3.1in) Here you can see other geometric molds for concrete and other https://www.etsy.com/shop/LGSiliconeMolds Manufactured from highest quality silicone. The color of silicone may vary. Suitable for use with concrete, plaster, resin, wax, clay, polymer clay, soap, candle. Microwave and freezer safe. Silicone mold (food safe) temperature ranging from -50°C to +200°C (from -58ºF to 392ºF ). Platinum Silicones: - do not become brittle or break-down over time making them suitable for long-term art pieces and molds - platinum pieces have greater temperature and chemical durability than tin-based pieces - platinum silicones have the greatest chemical, microbial, and temperature resistance, and generally remain flexible for years. In contrast, tin cured silicones tend to become somewhat brittle after a few to several years, and begin to split or tear. To create at mold I need 1-4 days, but I do as soon as possible. Hand made in smoke and pet free home with love.