BIESEMEYER 30 in T Square Fence and Rail System Balustrade System Parts mount the ladder on a Item Weight:14.1 mount the ladder on a surface at least 24" above the waterline disabled people mounted to angle iron rail Laminated 9 ply birch plywood sides are durable and non marring Fence body constructed of 14 gauge welded steel 3 Point locking system with twin hairline pointers to assure fence is parallel to blade Fence is easy gliding on nylon pads with quick action handle with magnets to hold handle up in release position Fence securely clamps to front tube only to insure perfect parallelism Upgrade your table saw with Delta T Square 30 in fence and rail system Mounting design attaches to Delta and most other table saws with cast iron tables 1 Piece 14 gauge 2 in X 3 in rectangular steel guide tube