Makita D12413 ACC V-Grooving Bit is crafted from high quality material. It is designed to cut deep or shallow V grooves. This bit is great for grooving in many workpieces in woodworking projects and sign making or for adding decorative accents to furniture and plaques. It cuts all composition materials, plywood’s, hardwoods, and softwoods. Diameter: 9.5 mm. Shank: 8 mm.