It's safe assembly clampwhich areused for mounting of cylindrical air channel. EPDM lining for; Noise reduction up to 15dB level according to DIN 4109 Vibration Reduction Partial compensation of thermal expansion. Easy and safe assembly through Philips Combi side screws Electrogalvanized for corrosion protection(8-10 Microns)There are also pipe clamp,ventilation clamp,performed speed clamp,sprinkler clamp,clamp band ect. More --Pipe clamp without rubber , --Pipe clamp with rubber and screw, --Pipe clamp with rubber and nut, --Pipe clamp with rubber and combo nut M8/M10. --Ventilation clamp with/without rubber, --Sprinkler clamp with nut, --Performed Speed Clamp.