These clamps are adjustable with a screw mechanism. Thereby the desired pressure can be continuously adapted to the needs and increased or decreased during use. The contact area, 8 millimetres wide, is slightly inclined towards the inside, which allows attachment to various parts of the body. The plastic covering provides a good fit and very effectivly prevents them slipping off. These clamps are also very well useable for the attachment of weights. Length of clamps approx. 8 centimetres. Unit: 1 pair