Four piece router bit set for use with kitchen worktop jigs. Tungsten carbide bits suitable for all routers with 1/2in collet. Set contains:1 Straight Cutter: 12.7mm x 60mm x 1/2in shank 2 Straight Cutters: 12.7mm x 50mm x 1/2in shank 1 Flush Trim Cutter: 12.7mm x 25.4mm x 1/4in shank