DeWalt TCT Reversible Planer Blades 82mm. 82mm TCT reversible planes ideal or use with DW677, DW678K, DW678EK and DW680K, corded and cordless planes. Features & Benefits • Reversible carbide straight blades • Quick-set knives for easy set up • Great for planing wooden studs for framing or hardwoods for furniture making • Durable high speed steel construction Specifications • Manufacturer Code: DT3906-QZ