CoCr Base compatible with MIS® Seven Sale! from 6500 /per Type Engaging Non-Engaging Platfoorm SP WP 4.8 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 perfectly fit the MIS® Seven model. SKU:31.056 Tweet