This Stanley Clamping Mitre Box features a patented cam lock clamping system that securely holds your workpiece for precise cutting. It includes a built-in saw stop to prevent damage to the mitre box. The mitre box is designed with 90° and 45° mitre slots, as well as 22.5° slots for creating octagon shapes. Its one-piece injection moulded design ensures extra strength. This product is available with or without a fine tooth tenon saw.