Fastcap - 3-1/2" x 12" Speedbrace for Granite Counter-top Support, 300 Pound Load Capacity, White , 4-Pack - 05047 POWER COATED STEEL: Made of thick 3/16'' powder-coated steel 300 POUND SUPPORT: Supports your countertop with ease NOT VISIBLE: Nearly invisible when installed SPECS: Measures 3-1/2'' W x 12'' L COUNTERSUNK SCREW HOLES: Screw holes are countersunk into the brace for a flush installation