Feature●[Size] Installation Tool Inner Diameter: 12mm / 0.47"; Disassemble Tool Inner Diameter: 6mm / 0.24", Installation Tool Size: 10 x 1.7cm / 3.94" x 0.67" (L*Max.D), Disassemble Tool Size: 10.7 x 1.7cm / 4.21" x 0.67" (L*Max.D)●[Function] Makes disassembly and reassembly of valve assemblies quick and easy.●[Universal] Quickly remove and install valve retainers on most overhead valve engines.●[Easy to Install] Magnet in the tool body captures the retainer for quick removal and removal of the valve.●[Material] Made of good quality metal for durability. Stable characteristics and high reliability.Description