Description: Reel seat is made of plastic with aluminium alloy cover, firmly secures reel feet and prevents electrolytic corrosion. Lightweight, easy to install, durable and super strong. Good choice for rod building or rod repair. Resistance to impact and corrosion ,suitable for seawater and freshwater. Available in a great assortment of sizes. Specification: Material: Plastic + Aluminum Alloy Size: Length: 150mm/5.90inch; Inner Diameter: 15.5mm/0.61inch Length: 160mm/6.29inch; Inner Diameter: 17mm/0.66inch Length: 170mm/6.69inch; Inner Diameter: 18.2mm/0.71inch Length: 176mm/6.92inch; Inner Diameter: 20.2mm/0.79inch Length: 177mm/6.96inch; Inner Diameter: 22.2mm/0.87inch Length: 180mm/7.08inch; Inner Diameter: 24mm/0.94inch Package Includes: 1 Piece Reel Seat Note: NOTE: The rod outer diameter should be less than 0.2mm of wheel tube inner diameter. Use the caliper to measure wheel tube outer diameter. Select the size of the outer diameter of the wheel. If rod size is the same as wheel tubeinner diameter, you can choose the larger one. Point the tape or the thin line and then put it on, and if it is small, there is no way to use it. Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.