Top Flite's patented, easy-to-use SmartCut trimmer is engineered for a model airplane's contours. Seams almost disappear! Its reversible spacer guide measures exact 1/8" or 1/16" overlaps. Remove the guide to cut along inside corners and in other difficult areas with precision. The durable, plastic body features molded-in finger grips and thumbscrews for varying blade depth. Includes two #11 blades and detailed instructions.