Simply slide these collars onto a shaft and tighten the set screw to hold the collar in place. Collars are easy to adjust with their set screws. Made of carbon steel with a Black-Oxide finish to offer mild corrosion resistance. Our shaft collars are available in several different styles to meet you or your customer€s needs. Climax Metal Products Co. in business for over 60 years is the leading manufacturer of shaft collars, rigid couplings & keyless locking assemblies. Climax Metals, where fair market pricing and excellent customer service is our promise to you.