Precision-engineered and manufactured under strict control from top-quality materials, miniplaner pal planer jigs set knives quickly and accurately with powerful neodymium magnets. Jigs hold knives in position while freeing both hands to tighten the gib. Our knife-setting system lets you set planer knives in perfect alignment every time. It also allows you to shift nicked knives on 2-1/2 to 4-inch cutterheads to get a perfect cut with an accuracy of plus or minus .001-inch. For 12-inch and smaller planers with 1-7/8 to 2-1/8-inch cutterheads. Sold in pairs.