Description: 【Metal Construction】: Crafted from quality metal, these trailer axle spring seats are designed to withstand the rigors of heavy duty use, ensuring long last performance and reliability 【Suitable Fit】: Specifically engineered to be suitable for 3" Round Tube Mount, these Trailer Axle Spring Perch Seats provide a secure and stable fit for your trailer's system 【Part Compatibility】: Designed as a replace part with part model SP-3, making it a versatile choice for various trailer models requiring this specification 【Heavy Duty 】: The sturdy construction ensures durability and reliable performance under demanding trailer loads, providing a secure mounting point for the trailer's leaf spring 【Convenient】: Each purchase includes 2 spring seats, providing you with everything needed to complete your axle setup or replacement efficiently Specification: Material: Metal Size Chart: Length: 10.2 cm/4.02 inch Package Includes: 2 Trailer Axle Spring Perch Seats Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.