The WHL RR 26×1.5 559×19 ALY BK MSW 36 ALY FW 5/6/7sp QR BK 135mm 14gBK is a rear bicycle wheel designed for 26-inch bikes. It features a 559x19mm black alloy rim with machined sidewalls, 36 black 14-gauge spokes, and is compatible with 5, 6, and 7-speed freewheel systems. The wheel includes a quick-release mechanism and has a 135mm hub spacing. This configuration is suitable for various types of riding, offering durability and compatibility with a range of gear systems.