Specification:Features: Using - magnet, this jig will help you install new planer blades in alignment with accuracy.The easiest and most efficient way to reset your blades, fits most planer blades.Simplify setting and adjusting knives in a cutter by stabilizing the knife blade.The system consists of two gauges each within a framework featuring magnets for firmly attaching to a cutter .Simply place the gauge assembly over the knife and then adjust for the correct knife height.Specifications: Material: Plastic + Metal + Strong MagnetMinimum Cutting Block Diameter: 75 mmMaximum Cutter Diameter: 125 mm Height Adjustment: 22 mmIncremental Adjustment: 0.15 mmWeight: 370g(approx.)Package Includes: 2 x Planer Blade Setting Jigs 1 x Wood BoxNote: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 Jigs1 x Wood Box