Description: These black bike presta valve caps are made of durable aluminium alloy. These bike air dust covers universal fit on standard PRESTA valve stems, include Mountain Bike, Roade Bike etc. These metal presta air valve stem caps with mesh threads on the surface, it easier to grab and tighten it with your fingers on the fly. No tools required, No modification needed, Directly replacement. Help to prevent leakage, dirt and other objects from damaging cores. Can replace the original bad valve cap of the tire and also show the beauty characteristic of the tire. This french style valve cap can protect your valve core against destruction, dirt or being dusty. Specification: Material: Aluminium alloy. Size:1.7*0.7cm. Color:as the picture! ATT: The Bicycle presta valve cap only suits for presta. Small parts, please keep away from little kids. Note: 1. Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. 2. The colors may be different as the difference display. Please understand. Package Included: 2pcs/4pcs Please kindly Note: Items will be repackaged to save your shipping charge & to be environmentally friendly. We guaranty the item will be protected well in bubble bags, No retail box!