ALUMINUM MAGNETIC OIL DIPSTOCK COMPATIBLE WITH YAMAHA INVERTER, BLACK COLOR Made of hard aluminum processed by CNC ,silver color shows clean and light. Can remove metal shavings from the oil reservoir which leads to less wear and tear on your generator for preserving its lifetime. Corrosion-resistant sealing ring prevent the oil in the machine from leaking out. Threaded with dedicated tooling, precision and repeatability. Industrial-strength magnetic tip collects metal shavings floating in your generator’s oil tank. The top flat side can be used with spark plug sleeve or other tools to screw into and out of the spiral to avoid being burnt by the high temperatureif operated by hand.