Hard Anodized 7075 Front / Rear Shock Absorber for 1/5 RC Car Losi 5ive T Part
5, Wear-resistant : good performance for copper content more than 2% 's aluminum alloy its greatest abrasion resistance index for 3.5mg / 1000 turn. others all. alloy abrasion resistance index shall not exceed 1.5mg / 1000 ring;.