Designed for shaping aluminum composite (sandwich) materials (ACM) with Flat bottom v-grooves. Routing v-shaped grooves, whereby the aluminum cover and a part of the polyethylene core is removed, allows Folding/creasing the remaining material by hand. Ideal for wall panel fabrication, #AMS-140, includes tool, 45792, 45795, 45798, AMS-140 3-pc. Carbide Tipped V-Groove 90, 108 and 135 degree angles for double edge Folding aluminum composite material (ACM) panels 1/4 inch shank router bit set