Features: 1. 100% brand new and high quality. High hardness, good strength, durable. 2. Ideal replacement for the original one. 3. Easy to use and install. 4. Suitable for Partner 350 351 370 371 390 420 replacement. 5. Widely used in agriculture, fishery, animal husbandry, aquaculture, forestry. Specification: Condition:100% New Material: Metal Color: As Pictures Shown Size: Approx.40mm / 1.6 inch, 63mm / 2.5 inch, 73mm / 2.9 inch Package list: 3 * Spring (In different size) Note: 1. Please allow 0~1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 1 1. 100% brand new and high quality. High hardness, good strength, durable. 2 2. Ideal replacement for the original one. 3 3. Easy to use and install. 4 4. Suitable for Partner 350 351 370 371 390 420 replacement 5 5. Widely used in agriculture, fishery, animal husbandry, aquaculture, forestry.