*Aluminum 7075 durable lightweight material *All hard anodized for the best rigidity *Never come loose —- 2 black clockwise & 2 natural color counter clockwise shock mount screws *With a slightly larger diameter shoulder design that fits more precisely into the shock rod end pivot ball for the smoothest performance *The hard anodized black screws have clockwise threads for the front left & rear right shocks *The hard anodized natural color screws have counter clockwise threads for the front right and rear left shocks *Use either a 5.5mm nut driver or a 2mm hex wrench to install