Made of high quality 65Mn spring steel: in use and have a long serving time. construction and hold very well. The spring clamps include 7 different diameters clamps to adapt to different hoses: 7mm, 9mm, 10mm, 11mm, 14mm, 15mm, 16mm.Come with a plastic storage box has classification figure inside, could facilitate your storage and classification size. 360 degree inner ring design: prevent damage to the pipeline effectively., Weight: 0.63713593718 Pounds, Manufacturer: Jaywool