Precision-engineered and manufactured under strict control from top-quality materials, our Mini Planer 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"- 4" cutterheads to get a perfect cut with an accuracy of ±.001". For 12" and smaller planers with 1-7/8"- 2-1/8" cutterheads. Sold in pairs.