ZINC alloy Key type tire valve cap, valvecoreremover 1.The "key "on the top of cap is used for screwing out (changing) the valve core. So this kind of caps can be usd on CR202,TR414,TR-4 series etc. 2.Ourproductsare100%leaktestedandaremadeofonlythehighestqualitymaterials 3.OurfactoryisoneoftopleadingmanufacturersinChina. Item NoCA valve capmaterial availablecopperzinc alloyWeight2.1g/pc1.7g/pcInside screw8v1Pcs/ctn1000pcs/poly bag,10bags/cartonCarton size35X35X14cmGW/NW21.5kg/21kg17.5kg/17kgQ'ty/20'FCLabout 1494 cartonsQ'ty/40'FCL:about 3012 cartonsMQO10000pieces=1 cartonPayment termsT/T(with 30%in advance,70% balance against B/L copy)Loading portNingboSample lead time1-3daysOrder lead time15-20 days after deposit received