Steel Construction, Zinc Plated, Ball Bearing 100 LB rating per set. Height 1.77" x Width 0.5" Full extension. Side mounting design. Disconnect Lever Soft-close function prevents drawers from slamming shut. Mounting screws and instructions included (FACE FRAME CABINET BRACKETS NOT INCLUDED) Material Cold Rolled Steel Finish Zinc-plated Load Capacity 100 lb Hight (1.77") (45mm) Width 0.5"(12mm) Mounting Side mount Mounting Screws #6 x 5/8 screws