Features 【Adjust 】Simply place the gauge assembly over the knife and then adjust for the correct knife height. 【Micro-Adjustable Magnet】Using micro-adjustable magnet, this jig will help you install new planer blades in perfect alignment with accuracy. 【Useful Tool】Simplify setting and adjusting knives in a cutter head by stabilizing the knife blade. 【Two Gauges】The system consists of two gauges each within a framework featuring magnets for firmly attaching to a cutter head. 【Widely Use】The easiest and most efficient way to reset your blades, fits most planer blades. 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