Earthstone Clay ES 50 Crank 100 KgEarthstone Clay ES 50 Crank Available in 25 Kgs bags. Minimum order 100 Kgs. Hand builders and sculptors will be delighted with this superb new crank body. It is an open textured, coarsely grogged clay, which still retains tremendous plasticity. It has all the qualities you expect from crank e. g. warp resistance, low shrinkage and excellent green and fired strength. It fires 1120C 1280C and gives toasted buff in oxidation and a rich, warm speckled