CoCr Base compatible with Osstem® TS/ Hiossen® ET Sale! from 6500 /per Platform Regular Mini Type Engaging Non-Engaging Qty. Add to Cart This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. This Base is made of Cobalt Chromium alloy and has been designed to fit perfectly with this model. SKU:31.073 Tweet