1. Size: The outer diameter of the hexagonal shaft of the crank is 4.5 mm on the opposite side and 5.0 mm on the opposite corner, suitable for most fishing reels, suitable for a variety of casting reels and spinning reels; 2. Usage: The reel handle can be well compatible with various brands of reels. There are 3 different models for you to choose from to suit your needs. Small size suitable for 1000-3000 series fishing reels; Medium-sized for 3000-5000 series; Large is suitable for 6000-7000 series 3. Metal Materials: Our rotating reel handles are made of high-quality metal materials, which are sturdy and durable, lightweight, and easy to carry. Good quality can provide a r guarantee for your life 4. Non-slip handle: The knob of the fishing reel handle is made of all-metal folding rocker arm Wood handshake material, non-slip and comfortable to hold. The humanized design of the handle allows you to concentrate on fishing and enjoy leisure time, which is suitable for taking relatives and friends to fish