There are 16pcs female and male skating screws in a pack, suitable for inline skating wheels. It is easy to support wheels and bearings, and is easy to match with the male and female shafts of roller skates. Made of stainless steel to and rust. Features - Color: Silver. - Size: 3.60X0.60X0.60cm/1.41X0.24X0.24 inch. - Material: Stainless steel. - : 31mm skating screw is the perfect replacement for the front wheel. The 36mm skating screw is the perfect replacement for the rear wheel and brake bolt. - Only suitable for skating shoes required the male and female screw fittings on the wheel. Easy to install for you. - This set of skating screws has experienced strict material management process, so it can be fundamentally ensured that the quality of the product is high. - Made of high grade stainless steel with coating on the connecting part, it is durable, sturdy and not easy to loosen. - Adopts precision production to stable characteristics and high reliability. Package list: 8 x 31mm screws 8 x 36mm screws