The Falcon SC81A-DEL-HD/PA-AL-SLIM Surface Closer is a precision-machined, high-performance surface closer that is designed for use with Falcon's PA-AL-SLIM Series of precision-machined aluminum surfaces. The SC81A-DEL-HD/PA-AL-SLIM Surface Closer is a high-performance surface closer that is designed for use with Falcon's PA-AL-SLIM Series of precision-machined aluminum surfaces. It features a precision-machined, hardened steel arm that is hardened to Rc 56-58 and has a long life. The SC81A-DEL-HD/PA-AL-SLIM Surface Closer is also equipped with a hardened steel jaw that is hardened to Rc 56-58.