Function: 1. Made of high quality aluminium alloy material, durable and sturdy, has a long service life.2. The rims have an asymmetrical design so that the rims distribute tension evenly without sinking in.3. The wheels can be mounted faster with this product, high performance, a good replacement.4. Suitable for 20 inch wheels and suitable for tyre types 20 x 1.5 and 20 x 1.75.5. It can be installed with 28 spokes, thick rims, universal for and electric vehicles.Specification:Item type: 28 hole rimsMaterial: aluminum alloyColor: silver blackSpecification: 20 inchOutside diameter: approx. 41.8cm/16.5inchInner diameter: approx. 37cm/14.6inHeight: approx. 2.5cm/1.0inchWeight: approx. 386.0g/13.6ozNumber of holes: 28 holesSuitable for 20 x 1.5 and 20 x 1.75 tyre modelsSuitable for 20 inch wheelsPackage list:1 x 28 hole rims Note:Please allow 1-2cm/0.4-0.8 inch error due to manual measurement. Thank you for your understanding. 28 holes mean that 28 spokes are needed. Look at the tyre model first and then count the spokes. This rim is a thickened rim. Universal for and electric vehicles. The length of the spokes is determined by the rims, the hub and the weaving method (the length can be many times). So if it is not suitable for the original spokes, you can do this, adjust it by the weaving method. If not, you can only buy a new spoke