Features: Made of high-quality materials, high strength, high hardness, and practical. Uses tiny adjustable magnets to help install planer blades for precise alignment. Equipped with heavy-duty magnets capable of holding blades up to 20 inches in length. Designed for easy use without the need to disassemble components. Compatible with all makes and models of planers, jointers, and combination planer/thicknessers. Can be used on planers, jointers, and molder heads with cutterheads ranging from 2-9/16 inches to 5-1/8 inches. Designed for precise blade leveling adjustment. Includes two planer blade calibrators, each within a magnetic framework for secure attachment to the cutter head. Simply place the gauge assembly over the cutting tool and adjust to the correct height. Simplifies setting and adjusting cutting tools by stabilizing the blade during installation. Acts as a time-saving device when mounting and setting planer blades. Specifications: Minimum cutter shaft diameter: 75mm Maximum cutter shaft diameter: 125mm Height adjustment: 22mm Incremental adjustment: 0.15mm Magnetic Planer Knife Blade Setting Jig Height Setter Tool Leaves hands free to adjust jigs and cutter head Keeps knives in alignment while setting Simple to use Material: Metal Color: Black Package Contents: 2 x Planer Blade Calibrators Note: Light reflection and different displays may cause slight variations in the color of the item in the picture compared to the real thing. Measurement allows an error of +/- 1-3cm.