Feature: 1. Made of high-quality aluminum alloy material, durable and sturdy, with a long service life. 2. The rim adopts an asymmetrical design, allowing even tension distribution without sinking. 3. Enables faster wheel assembly, high performance, ideal as a replacement part. 4. Suitable for bicycles with 20-inch wheels and compatible with 20x1.5 and 20x1.75 tire sizes. 5. Can be installed with 28 spokes; thickened rim design, universal fit for bicycles and electric vehicles. Specification: Item Type: 28 Holes Rim Material: Aluminum Alloy Color: Silver Black Size: 20 inch Outer Diameter: Approx. 41.8 cm / 16.5 in Inner Diameter: Approx. 37 cm / 14.6 in Height: Approx. 2.5 cm / 1.0 in Weight: Approx. 386.0 g / 13.6 oz Number of Holes: 28 holes Compatible with bicycle models using 20x1.5 and 20x1.75 tires. Designed for 20-inch wheel bicycles. Package List: 1 x 28 Holes Rim Note: Please allow 1–2 cm error due to manual measurement. 28 holes require 28 spokes. Check tire model and count spokes before ordering. This is a thickened rim, suitable for various bicycles and electric vehicles. Spoke length depends on rim, hub, and lacing method. If original spokes are not compatible, adjust lacing pattern or purchase new spokes accordingly.