Feature: 1. COMPLETE KIT: This set includes a lever bar, pulling devices, connectors, valve spring compressor adapters in different specifications, and an extension for valve spring compressor adapters, making it a good assistant for valve spring and valve stem oil seal replacement. 2. TIME SAVING OPERATION: Replace valve springs and valve stem oil seals without disassembling the cylinder head, saving time and energy. This tool kit greatly improves work efficiency and allows you to complete the replacement quickly and easily. 3. VERSATILE APPLICATIONS: Suitable for automotive valve spring disassembly and installation. The valve spring compressor adapters come in different outer diameters, 24.75mm/0.97in, 27.5mm/1.08in, 30.25mm/1.19in, 35.50mm/1.4in, providing flexibility for various tasks. 4. SIMPLE MAINTENANCE: Save your cost by replacing valve springs yourself instead of going to a repair store. With a smooth surface and simple structure, cleaning this tool kit is easy, just wipe it clean with a wet rag. 5. EFFICIENT AND PRACTICAL: With this tool kit, you can easily handle the task of valve spring replacement without the need to disassemble the cylinder head. It's a handy tool for DIY enthusiasts and professionals alike. Specification: Item Type: Valve Spring Compression Tool Material: Carbon Steel Valve Spring Compressor Adapter Outside Diameter Approx. 24.75mm / 0.97in, 27.5mm / 1.08in, 30.25mm / 1.19in, 35.50mm / 1.4in Usage: For disassembly and installation of automotive valve springs. Package List: 1 x Set of Valve Spring Compressor Tool(10PCS) 1 x Storage Box