Round steel U-bolts (without plastic pipe saddle) type RBD (DIN 3570, type A). For common diameters of between 25 and 521 millimetres. Complete clamp consisting of 1 round steel U-bolt (type RBD according to DIN 3570, Form A) and 2 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).