This set comprises four cutters of the most commonly used by kitchen fitters. These include: 2 x 60mm long x 12.7mm diameter, 2 flute 1/2"(12.7mm) shank straight cutters for cutting worktop joints using a Postform jig, 1 x 50mm long x 12.7mm diameter, 2 flute 1/2"(12.7mm) shank straight cutter with bottom cut for plunge cutting through laminated and melamine faced board for sink and hob cut-outs etc, 1 x 25mm long x 12.7mm diameter, 2 flute 1/2"(12.7mm) shank flush bearing trimming cutter, for trimming laminates, lippings and for template following applications.1/2"(12.7mm) shank only.