Must Have Tool: When performing fuel line or coolant maintenance, use the Hose Clamp-Off Pliers to quickly and accurately clamp or break hoses without damaging the hose to repair . The ratcheting pliers are automatic locking, saving you more time and freeing up your hands. Tips: these pliers are mainly designed to be used on flexible, compressible types of hoses, don't use them on any type of metal hoses or hoses which would be distorted or bent by the clamping action Wide Application: These pinch-off pliers are suitable for automotive hose lines, radiator lines, fuel lines, heater and coolant lines etc. The small 8-inch hose pinch off plier is used for small hoses and tight areas, such as fuel hose for small engine, water hose under kitchen sink etc; the medium 10-inch and large 12-inch hose pinch plier is used for radiator, vacuum lines and some slightly larger hoses etc : Our hose pinch pliers are made of high quality steel, which is hard and extremely , and be more convenient when clamping off the hose, making them easier to use than plastic hoe pliers. The design of the serrated end of the jaws allows for parallel alignment and secure clamping of the hose with the serrations. The handles at the jaws have been upgraded with an impregnated finish for a comfortable feel and ease of use Easy to use: First push the switch on the ratchet mechanism on the pliers to open the jaws, then depending on the size of the hose, push the switch and the jaws close until the hose is locked or pinched off. They have cushioned grip handles for easier use Specification: This set includes 3 different hose clamps 8 inches, 10 inches and 12 inches. Color: Black & Red Material: steel Package Contents: 3 * Hose Pinch Off Pliers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.