Adopting great quality material, which lets you use it for a very long time. Though it is simple , it's so practical when you use it. The excellent workmanship of our product will bring you a good experience. Easy and convenient to install and use, it is a very useful skating screw. Features - Color: Silver. - Size: 3.50X1.20X1.20cm/1.38X0.47X0.47 inch. - Material: Stainless steel. - It has a simple design, but very practical in use, giving you a . - It is sturdy, not easy to break, prevents corrosion, surface rust prevention. - The inline skating screw is easy to install, and it needs 2pcs 4mm key on double ends for installing. for fixation and another tool for doing the work (the wrenches are not included). - Enough quantity: you will receive 20pcs of skate wheel socket screw, enough amounts to meet your long-term using needs - These skate wheel socket screws are made of quality stainless steel, which possess , sturdy and reliable to improve the service life and durability of bearings. Package list: 20 x screws