They are made of high quality Aluminum Alloy

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Fits for RC1/8 u0026amp; 1/10 On-road Racing Car,Buggy and Largefoot Car

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The tracking information is available for all items selling in our shop,less waiting

nOuter Diameter:10mm/0.39"
Inner Diameter:4mm/0.16"
Thickness:2mm/0.08"
Total weight :5g
Package Include:
8 x M4 Ball Head Screws Cap Spacer Washer Flat Head Gasket