Durable MDF platform with low-friction melamine coating for easy sliding. Solid brass indexing keys ensure uniform spacing and tight finger joints. Matched with HSS router bits for precisely fitting joints. Sacrificial MDF fence face helps control tear-out. Ideal for creating coping joints for small and medium boxes and frames. Cuts 6mm (1/4"), 10mm (3/8"), and 13mm (1/2") box joints on a router table. Includes MDF platform, 2 x soft-grip knobs with mitre track hardware, 1 x sled, 1 x sacrificial fence face and 6mm (1/4), 10mm (3/8) and 13mm (1/2) brass indexing keys. Up-cut HSS router bits sold separately. 1/4" / 3/8" / 1/2"