These Sakuma swivels are some of the best quality trace making swivels weve seen for some time and are very strong, smooth and reliable. Knots should be tied to the diamond eye with the round eye trapped on the rig body. The textured barrel will hold silicone stand offs, knot protectors and the like in place. This is the Size 3 which has a conservative breaking strain of about 100lb. Hybrid Eye - Textured Barrel - Black Finish. Pack of 100.