Features: brand new and high quality The aluminum alloy material is more solid, and the secco design reduces the vacancy. Compared with the original solid design, this product uses hollow design, which makes the appearance more refined and wired. 6061 t6 aluminum is a lightweight material with high tensile strength and great durability during extreme rc action. Delrin collars are designed and hand-installed to eliminate for gap and friction in order to achieve the best performance, in harmony with the rest of the vehicle. Compare with the original design, this product has a trendy hollow design. Applicable model: Arm: 1 / 7 unlimited all-road speed bash ara109011 (special)Arm 1 / 7 introduction 6s for blx all-road ara109001Arms 1 / 8 typhon 6s for blx buggy old and new. Specifications: Material: Aluminum Alloy Color: Black, Blue, Red Proportion: 1/7 Package Includes: 1Pair x RC Front Upper Suspension note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.