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 for even tension distribution without sinking. 3. Enables faster wheel assembly, high performance, and serves as a reliable replacement. 4. Suitable for bicycles with 20-inch wheels and compatible with 20x1.5 and 20x1.75 tire sizes. 5. Designed for 28 spokes, features thickened rims, and is compatible with various 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. Fits bicycles with 20-inch wheels. Package List: 1 x 28 Holes Rim Note: Please allow 12 cm error due to manual measurement. Thank you for your understanding. 28 holes require 28 spokes. Check the tire model and count the spokes before purchase. This rim is thickened and universally fits most bicycles and electric vehicles. Spoke length depends on the rim, hub, and lacing method. If the original spokes are not compatible, adjust the lacing pattern or replace with appropriate spokes.