Round steel U-bolt with plastic pipe saddle / saddle (short) type RB+RUK. For common diameters of between 25 and 521 millimetres. Complete clamp consisting of 1 round steel U-bolt (type RB), 1 plastic pipe saddle / saddle (type RUK) and 4 hexagon nuts (according to DIN EN ISO 4032). Manufactured from uncoated steel, galvanised, blue-chromatised steel. Alternatively also available in stainless steel V4A 1.4401 / 1.4571 (AISI 316 / 316 Ti). Pipe saddle material: polypropylene PP and polyamide PA. Horizontal or suspended fixing of tubes on steel beams, profiles and brackets. The design with two threads enables them to be adapted ideally to the precise outer diameter of the tubes.