I bought a floating clamp instead of a starting clamp for backup purposes. I have a Gamma X-2 that uses floating clamps. I thought of buying a starting clamp to start the mains and for tying knots. After some deliberations, I decided to buy another floating clamp and I am glad I did. Over time, floating clamps can lose their grip and this is what happened to one of my floating clamps. Now I am using the backup floating clamp. The slipping floating clamp I now use as the starting clamps (only 1 side is slipping. The other side is still good). Hope this helps..