Features:OOTDTY and high qualityMade of hard alloy, r ble.Easy to Install and remove: they could be disaembled from the tires ar winter.The screw in tire studs can increase the friction between the tire surface and the ground, so as to improve the stability of the vehicle in the proce of running, very suitable for driving or riding on days, and the small size is also applicable for snow allowing you to go climbing, hiking, camping without sliding and falling easily.You will receive 100 pieces of screw tire studs , enough to satisfy your demands for daily and repment, you can store them for a term or share them with your families and friends.It can be installed on the sole to prevent slping when walking on ice.Specifications:Material:AlloySize:Approx.9x4mm/0.35x0.16in,12x4mm/0.47x0.16inType:A,B,C(Installation Tool)Net Weight:22-65gPackage Includes:100x Screws or 1x Installation ToolNote:Please allow 1mm errors due to manual measurement.Due to the difference between different s, the ture may not reflect the actual color of the item.