Valve Core Removal Tool: The valve core removal tool is made of high-quality aluminium alloy, which is CNC machined and anodised, used for installing and removing and Presta valves. Comes with a Presta valve extender with 5 mm flat key. Help to tighten or remove valve cores on bicycles, cars, and other air-filled tyres. Tubeless sealing syringe for cycling: Adopts a capacity (60 ml) syringe with open scale value that is accurate and corresponds to the capacity. A plunger, a straight tube, a slim visible head. You can inject the sealant through the valve head into the tyre without clogging the valve. Additional Presta Valve Cores and 4 pieces Presta valve cores and 4 pieces Presta valve are included. Presta valve cores can be used to replace the old or leaky valves. The Presta valve can prevent air leakage and prevent dirt and rain from entering. Easy to use: the conventional tubeless gasket sprayer goes over the valve and causes sealant to clog the valve and no air can penetrate the tyres. The newly developed tubeless bicycle seal syringe can be inserted directly into the tyre without blocking the valve. So you can the problems of setting up without a hose. Specifications: Dimensions: 15 x 4.5 x 3.5 cm Weight: 57g Color: black + silver + blue Material: metal + plastic Package Contents: 1 x tubeless tyre seal syringe with switch. 1 x valve core removal tool 4 x Presta valve cores 4 x Presta valve Only the above package content, other products are not included. Note: Light 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.