DescriptionMaterial:Thermoplastic. DIN 7984 screws and DIN 985 nuts steel.Version:Black. Screws and nuts electro zinc-plated.Note:These flange clamps are for 30 mm square tubes. Use reducer sleeves K0491 if smaller tubes are to be clamped or a conversion from square to round tubes is required.On request:Plastic clamping levers for tightening.Accessory:- Reducer sleeves K0491 - Round and square tubes K0493Special features: