A patented cam lock clamping feature secures workpiece for easy accurate cutting. A built-in saw stop prevents cutting into the mitre box. The mitre box has 90 and 45 mitre slots as well as 22.5 slots for octagon shapes and is of a one piece injection moulded design for extra strength. Available with or without a fine tooth tenon saw. Comes complete with Tenon Saw (Fine Tooth). Size 310 x 130mm Maximum depth of cut 80mm