Premium Quality Rubber : The pump bulb is made of high quality rubber, thick and sturdy, build-in stop valve prevent backflow of the fluid for siphoning liquid flow quicker and faster. With 2 flexible PVC transparent hoses for visual liquid flow progress, high temperature and corrosion resistant, can be used for a long time【The two hoses are in diferent size. The longer hose or the shorter hose can be placed at the source container or the target container based on your use condition】 | Clip and Retainer Use : The metal clips are for fixing the hoses in place with the pump bulb, prevent slippage or leakage. And the adjustable hose retainers are for keeping the hose standing into the container or receiver, avoid slipping out and permit one hand-free operation. | Easy & Safe Siphon Pump : Say Good-bye to the dangerous and inefficient mouth suction way. Just connect the hoses to the pumb bulb, the black arrow towards the fluid following direction, put the upper hose into the source tank, a few squeezes of the bulb will get the fluid started following, then put the lower hose into the receiver tank, the fluid will flow automatically (The source fluid must be higher 11 inch or more than the receiver). | Efficient Manual Siphon Pump : Hand siphon hose pump for gasoline, oil, water, diesel and other common liquids, ideal for emergency transfer. Also suits for fish tank, aquarium tank, small fountain and small air cushion swim pool water transfer. NOT for edible oil, drink water, salt water and any chemical liquids. | Multi-Use Manual Transfer Pump : Lightweight hand siphon fuel pump is enough for simple daily use, suits for medium and small type equipments without anti-theft filter net, such as brush cutter, lawn mover, hedge trimmer, snow blower, motorcycle, scooter, ATV, lawn tractor etc, NOT for big truck types.