Clamps assortment kit contains more different sizes. Plastic material, not easy to rust and broken. Clamps are used in securing hose , cable, tube, fuel lines etc. Wide use both indoor or outdoor, apply in automotive, industrial, boat/marine etc. Loosen the screw knob of hose clips. Thread the through the hose clamp and adjust the size to fitting your hose's size. Tighten the screw knob at last. Features - Color: Yellow. - Material: Plastic. - Size: 2.50X2.50X5.00cm/0.98X0.98X1.97inch. - Very useful for water/oil and provide great clamping force. - Perfect for rubber and PVC hoses, with spiral wire dust collection systems, industrial vacuum cleaners or even pool pump hoses. - Delivers a heavy duty, leak proof and hose clamping tool constructed out of premium grade plastic built for durability. - Ring hose clamps designed to provide a secure and flexible option for connecting to dust hoods and other dust collection fittings. - Simple release and tighten the screw knob to adjust the clamp diameter. Package list: 12 x clamps