Profile: Complete Operating Room Designs manufactures stainless steel four sided chuck keys and supplies to surgical companies. We offer products such as stainless steel four-sided chuck key, 4" handle extension chuck keys, large drills & small drills. Two sizes are available in one key. There will be no more slippage if the key is damaged; it is just required to flip it over and to use the other side. No more dropping because it is unbalanced or too small. Our radiostereometric analysis (RSA®) is applicable in accurate measurements of skeletal or implant movements.