Versatile Adapter Set: Comes with a 3/8" rotating metal adapter and both 8mm and 10mm metal adapters, making it compatible with most outboard motors, including Johnson, Mercury, Evinrude, Yamaha, and Honda (not compatible with Volvo Penta) "Third Hand" Butterfly Adapter: The butterfly adapter acts like a third hand during pumping by securely anchoring the filler tube into the fill port, providing extra stability and convenience for hands-free operation Two Rigid Suction Tubes: Includes two rigid tubes of different lengths (5.9" and 4.7") to easily reach the bottom of quart bottles of varying heights, ensuring minimal fluid waste and maximum efficiency Fast & Efficient Pumping – Delivers 8cc of fluid per stroke for quick refills of marine lower units. The 20" flexible silicone hose is long enough to reach tight, hard-to-access areas, making fluid changes simpler for boats and vehicles alike Multi-Purpose Fluid Pump – Ideal for siphoning and transferring a wide range of fluids including gear oil, transmission fluid, differential oil, and lubricants. Perfect for boats, cars, trucks, RVs, motorcycles, and more DURATECH Lower Unit Gear Oil Pump for Standard Quart Bottles