Features Accurate Adjustment: Using a pair of micro‑adjustable magnets this jig will help you install new planer blades in perfect alignment with accuracy Setting Jig Setting Range: Minimum Cutting Block Diameter: 75 mm Maximum Cutter Diameter: 125 mm Mode: Simplify setting and adjusting knives in a cutter head by stabilizing the knife blade Precision Adjustment byBlade Setter: The system consists of two gauges each within a framework featuring magnets for firmly attaching to a cutter head With two planer blade, each within a framework with magnets for firmly attaching to a cutter for head. Simply place the gauge assembly over the cutting tool and then adjust for the correct cutting tool height. Service:Please feel free to contact us if you have any questions after received our products, we will try our best to solve your problem. Specifications: Material: Plastic + Metal + Strong Magnet Minimum Cutting Block Diameter: 75 mm Maximum Cutter Diameter: 125 mm Height Adjustment: 22 mm Incremental Adjustment: 0.15 mm Weight: 370g(approx.) Package Includes: 2 x Planer Blade Setting Jigs 1 x Wood Box Note: This product is not suitable for aluminum planers, but suitable for four-sided planing, press planing, and flat planing. Please confirm that your needs are consistent with our products before ordering. Package List 2 x Planer Blade Setting Jigs 1 x Wood Box