The Somikon zoom lever is a decent product at a very reasonable price. The lever is made of sheet steel and is transverse to the direction, thus it is rigid and transmits the motion without compression on the lens ring. He is 11 cm long and quite rightly so. At the end there is a round rotating handle, which is mounted in a fluid-like buttery continuous lubrication. This way you can grab him firmly while moving soft. The also made of metal perforated collar is lined with resistant foam, it is placed around the lens and hooked into the appropriate place with a check mark. This check could possibly sometimes jump out, you can do it with a pair of pliers, a tiny bit closer to press, but please very carefully. You can tell that the lever of practitioners is designed for practice and it does its job properly. In any case, you can really take advantage of its benefits only with a decent tripod and a corresponding floating head. A bit of practice to try the right hand and arm position is essential. I use the lever on a Panasonic G6 and the lens 14-140 This is stored mechanically rather dry and prone to bucking, tripod and zoom lever to bring peace in the zoomed pans. I would buy the part again.