This Fretz I-6 Insert can be used to create variety of shapes in small and large projects from shimmering dimples to 6.5mm high domes. Designed to be used with the Fretz H-2 Stake Holder (not included) insert this into the top hole of the H-2 and create shimmering dimples or use the side hole to make concave or even anticlastic shapes.   Fretz stakes are made from hardened 420-grade stainless steel with highly polished areas to prevent scratching or marring your workpiece. Made in Vietnam.