I love woodworking and a router is an essential tool for many quirky and simple woodworking tasks. When working with wood, I need properly sharpened, high-speed bits with tungsten carbide (TC) inserts on the edges to keep them sharp while shaping my wood, chipboard, or MDF. This set of 2 large bits have matching guide bearings to to enable me to use them on my excellent METABO 36 V cordless plunge milling machine for grooving, tongue and groove or even mortise and tenon joints. For best results, use a router table with a fence. These are large cutters with a full square 1/2" 3 TC cutter per wing cutter. I liked the size and the presence of the spacer. The cutters have top nuts so I can change the spacing or swap out the cutters of the two cutters. They have little plastic boxes, 1 per cutter for storage The router bits are very sharp and I haven't seen any defects, jagged edges or any problems I may need to lower the grinder speed to 18000 as they are quite large, 1 7/8" in diameter .I recommend this MEIGGTOOL shop.Cutter.It's good value for money!I hope you found the information and my review helpful.