Features: brand new and high quality Aluminum 6061 T6 is a light material with high tensile strength and great durability during extreme RC action. Delrin collars are designed and hand-installed to eliminate the for gap and friction in order to reach the best performance, in harmony with the rest of the vehicle. Compare to the original design, this product has a fashionable hollow design. Multiple positioning holes for users to adjust the angle of the dampers. Applicable models: ARRMA:1/7 LIMITLESS ALL-ROAD SPEED BASH ARA109011 (dedicated) Can be used universally: ARRMA 1/7 INFRACTION 6S for BLX ALL-ROAD ARA109001. Suitable for ARRMA 1/8 TYPHON 6S for BLX BUGGY new and old models. Specifications: Material: Aluminum Alloy Size: Approx.111.3x39.9x53.5mm/4.38x1.57x2.11in Color: Black, Blue, Red(optional） Package Includes: 1 Pair Rear Lower Arms note: Material: Aluminum Alloy Size: Approx.111.3x39.9x53.5mm/4.38x1.57x2.11in Color: Black, Blue, Red(optional）