You're looking at a heat proof ceramic wrist measuring bracelet mould for PMC to prevent irregular shrinkage during firing.Ensure your PMC bracelets are the correct size every time with this heat proof bracelet mould for silver clay that you can fire with your PMC creations. Quality made in Japan this mould is available in small, medium and large.Comes with pictorial instructions (Japanese) and heat proof paper to prevent sticking. Simply wrap the supplied paper around the mould and tape closed with ordinary scotch tape, and wrap your Silver clay artwork around the paper, once your silver clay has dried fire your bracelet with the mould to ensure a perfect fit.Make sure to get a smooth and standardized bracelet every time Measures 2.7 or 6.9cm in diameter. Create your own jewellery for fun or profit Available Sizes (each sold separately):• Small (6cm)• Medium (6.4cm)• Large (6.9cm)Maximum heat tolerance:: up to 900 degrees celsius