Chuang Qian 66835 Universal Mini Valve Spring Tester for 0-300LB/5LB Increments Valve Spring Features Fitment Universal tester use on 0-300LB, 5LB Increments Valve Springs. Quality Tools Precision tool for the professional & normal Users. valve spring testers allow you to evaluate your valve springs with a high degree of accuracy. Function Valve spring pressure tester is an invaluable tool for you to restore old engines, build new ones, or tear them down between rounds. Mini Version These mini testers can be used in vise jaws or an arbor press. Portable design for garage or at the track. Satisfaction Guarantee We aims to provide excellent products and the best service for customers. You can simply return it if you are not satisfied with the product. We support 30 days full refund for return and 12 months warranty. Package included 1 * Valve Spring Pressure Tester Go click the Buy Now Button and get this Cover with confidence! If you have any problem about your order, please feel free to contact us. Product Description