DIY Silicone Cabochons Molds, Resin Casting Molds, for UV Resin, Epoxy Resin Jewelry Making, Round PatternSize: about 120mm wide, 176mm long, 8.5mm thick; inner diameter: flat round 1: 9.5mm; flat round 2: 19mm; flat round 3: 30mm; flat round 4: 52mm.Temperature Limit: This mold permitted useful temperature range is between -20â to 200â.