Description: This type screw tire studs can be easily installed and removed without professional tools. When it's not in winter, it can also be disassembled from the tire. And you can store these screw tire studs for using again in th following season. Materials: 1. Pin of studs: 100% tungsten carbide (WC-80%+Co-10%, Hardbess :>90 HRA or >1300HV TRS Mpa:(N/MM2):1660) 2. Body of studs:carbon steel 3. Surface of studs: Galvanizing Size: D = 4mm d = 2.2mm H = 12mm h = 1mm Please pay attation: It's important for choosing right size of studs, you must to know the depth on pattern of tread rubber to your tire. The depth must longer than 12~15mm. Project includes: Tires Studs *200pcs(About) 4MM Drill sleeve *1 pcs(As a Gift)
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