1. Pure 2.<b>4 Different Sizes</b>: There are 4 different sizes to choose from, they are 24mm/25mm/26mm/28mm. Can be used for different purposes and projects. 3.<b></b>Material: C-clips circlip rings is made of 65Mn spring steel. It has higher tensile strength, sturdiness and provides longer life. Snap rings are retaining rings of the semi-flexible fastener, it is can rebound when tensed. Surface treatment: oxidized black. 4.<b>Feature</b>: This External Retaining Ring is used to secure parts on shafts into a machined groove. It features a durable construction for a long-lasting use. Install with pliers. 5.<b>Wide Application</b>: C-clips circlip rings are great for axles, shafts, and other moving parts. Such as cylinders, automobiles, valves, electrical appliances, spraying, doors and windows, bearings, machinery, etc. good for pros and hobbyists.