Made to remove the tiniest possible curl of wood to get that exact fit that separates "Pros" from "duds". Handles are placed at right angles to the cutting edge; you get complete control of the edge and almost no tendency to follow wood grain, gouge or dig in.Made of best quality tempered tool steel, with enough heft to eliminate any "flexing". Shaped for positive fingertip control of blade thru full stroke. Finger clearance under the handle for tight places. Available in 2 styles – 3 blade widths. Sizes small enough for trigger hole; big enough for barrel channel. Flat ones perfect for fitting floor plates, tangs, magazines. Not intended to rough out barrel channel, so Mfg: Brownells SPECS: Two styles: Curved and Straight, 3 sizes: 1/4" (6.3cm), 3/8" (9.5cm), 1/2" (12.7mm). Set includes one of each.