This has been discussed previously in a few other threads: http://tt.tennis-warehouse.com/showthread.php?t=149446&highlight=*********+clamps http://tt.tennis-warehouse.com/showthread.php?t=146036&highlight=*********+clamps But I thought I'd share a few of my own experiences after stringing with these. Just some background information, I purchased a Gamma X-2 roughly 2-3 months ago, did maybe 2-3 jobs with the composite flying clamps that came with the machine and was dissatisfied with them (they still do a relatively good job at tensions lower than 60 lbs but what really got to me was how hard it was to clamp down and release the clamp) so I called up Mark Gonzalez from Alpha and he hooked me up with a double and triple clamp from SW. As others have said, he really will make suggestions based on your needs (I highly recommend him for whatever stringing needs you might have). The design is very good. The entire clamp is solid metal construction with the SW logo in a pleasant shade of red, easy on the eyes. The locking mechanism is also shielded by rubber, so I guess that provides some shock absorption whenever you have to clamp the string (hard to describe ... but anyone who has used the composite plastic ones will tell you it can be a pain to snap the clamp together on the strings; not so with these ones). These are very easy to adjust to different gauges of string because the thumb knob is very loose but firm (this was an improvement over the composite ones because the adjustable thumb screws felt like opening an older locker). As emphasized in the few threads before, there is very little drawback/twist to be associated with these clamps. Although I don't have the money for an ERT-300 to measure actual tension, just based on what I can tell, there's very little noticeable tension loss whenever releasing the dropweight arm after clamping. Cleaning is extremely easy. I was never really sure how to clean the Gamma ones because I didn't know how rubbing alcohol would affect plastic over time (so I didn't want to mess with that). But with the SW clamps, I simply use rubbing alcohol to clean the teeth, then use compressed air to blow out any dust that might be in the hinges. Typically, I'll use the rubbing alcohol about every 1-2 weeks while the compressed air debris blowing is about a month. If you keep the clamps enclosed somewhere safe and dust free, I imagine you probably won't even need to do this step. Only qualm I have with the SW floating clamps is the bulkiness in doing ATW patterns. For those (and any one-piece patterns that require the clamping of one string at a time), I use a thinner double-clamp from Alpha that clamps single strings better. I apologize that I don't have better picture quality, these are taken from my cell phone camera (I haven't had a real camera for awhile, but if anyone wants to see a close-up picture of the actual clamps, I can borrow one).