Fine workmanship and durable in use. RC Car DIY enthusiasts like to use it to modify their cars. Upgrade parts for rc car models. Nice parts that can be upgraded to your RC car. Manufacturered by EAPTS. 100% brand new and high quality. Material: Metal . Aperture: app.3.5mm/0.14in. Spring Body Diameter: app.14.5mm/14.5in. Optional Sizes: app.90mm(3.54in) 100mm(3.94in) 110mm(4.33in)(Hole to Hole Length). Smooth and excellent damping effect. Suitable for Axial SCX10 TRX4 1/10 RC crawler car. Quantity: 4pcs RC Car Shock Absorbers. Easy to use stable performance. Made of high-quality metal material durable and long service life.