GST60B ETHELON Control Tissue Slippage During Firing 4x less tissue slippageâ? for the most precise transection. Uniquely designed for better gripâ?¡ to provide the least tissue slippage§ for the most precise transection. Proprietary Gripping Surface Technology provides superior tissue gripâ without additional trauma during firing. This means you can transect more of the tissue§ you intended - especially in very thick tissue - with each firing.