Features 1、Strong elasticity, high precision, wear resistance, can improve the service life of the model. 2、The spring is made of high-quality 65 manganese, which is corrosion-resistant and durable. 3、Exquisite workmanship, stable and reliable performance, can perfectly fit your model. 4、This valve spring has a cylindrical shape and can be widely used in automobiles. 5、Simple installation and replacement, beautiful appearance and small size. Specifications Condition: Item Type: Valve Spring Material: 65 Manganese Material Model: R175A Direction of Rotation: Multiple Shape: Cylindrical Compression Strength Limit: 214(N/S) Uses: Automotive Weight: Approx. 380g / 13.4oz Spring Inner Diameter: Approx. 23 mm / 0.9 in Wire Diameter: Approx. 3 mm / 0.1 in Size: Approx. 4.3x2.7cm / 1.7x1.1in Package List 12 x Valve Springs (2pcs/box, 6 Box)