Fishing Line Pump with Suction Cup The suction cup is firm and holds the unit securely in place. It is so easy to use, just insert the chuck and start spinning quickly and easily. suction cup at the bottom can be adsorbed on any smooth surface, especially on glass with water. Adjustable spool design The spool holder has a fixing spring to adjust the clamping force. You can also adjust the distance between the fixing screws to control the proper hold of the spool and adapt to different coil sizes, which effectively secures the coil. Lightweight and durable material The fishing line reel nbsp; is made of premium corrosion resistant aluminum alloy fishing shaft, has good durability, weighs 120g and is easy to carry. It is recommended that the diameter of the hole of the fishing line reel is less than 2.5 cm. Easy to remove and install The spool winder can be removed at any time to remove and install it, and it is easier to put the fishing line on the reel. This way whether you are in a kayak, boat, etc. You can take it with you everywhere to wind the fishing line yourself. Perfect for fishing enthusiasts Fishing line spools are a must have for anyone who works in fishing. With this tool, the reel can be rewound to prevent the hook from tangling and loosening. It is suitable for families, boats and fishermen.