Description: 【Premium Material】Valve spring compressor tools are made of chromium vanadium steel material, which has reliable quality, fine workmanship, durability and long service life. 【48 Pieces Valve Oil Seal Spring Repair Set】This set contains 48 pieces tools with various accessories and wide application. 【With Storage Box】The Car Engine Overhead Valve Spring Compressor Stem Seal Remover Installer Tool Set comes with a red storage box, which is convenient for you to store the tools and easy to carry and transport. 【Without Disassembly】Car Engine Overhead Compressor Tool Set can replace the valve oil seal without disassembling the cylinder head. 【Easy to Use】Car Engine Overhead Valve Spring Compressor, simple to use, universal, suitable for most engines, suitable for auto repair shops or personal DIY use Specification: Material: chromium vanadium steel Oil seal replacement set specifications: 5-6-7-8-10-11.5mm Handle length: 16mm Connecting rod length: 10mm Support rod:48mm Gas rod thread: 14 18mm Size Chart: red box: 48cmx27.5cmx10cm/18.90inchx10.83inchx3.94inch Package Includes: 1 valve spring compressor tools set Note: Please allow slightly errors 1-2cm differences due to manual measurement.