Rafix is the most important and improved connector in the furniture industry today. It makes a joinery reversible where it's a necessity when you're making furniture and cabinetry, especially shelving system of cabinets. When need to do final assembly of a project away from your shop & when moving. Using this jig set, no time wasted waiting for that glue to dry. Package Includes; 1 master jig, 1 drill bit 5 mm, 1 stop collar for 5 mm drill bit, 50 sets of rafix cam (20 mm x 12.5 mm), 50 sets of dowel.