Industrial Quality Signmaking, Lettering, V Groove Miter Fold are made by Amana Tool, the leading manufacturers of high-quality wood-cutting tools. Amana Tool 45798 V-Groove 135 Deg. Folding for Aluminum Composite Material (ACM) Panels Like Alucobond, Dibond, 0.078 Tip Cut Width x 1/2 CH x 3/4 D x 1/4 Inch SHK Carbide Tipped Router Bit is designedfor shaping Aluminum Composite Materials (ACM).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. Excellent for cutting: Aluminum, Clay, Zinc & Wood Composite Panels, Aluminium Composite Materials (ACM), Aluminium Composite Panel (ACP), ALPOLIC Copper Composite Material (CCM), Alucobond, Alupanel, Coroplast, Dibond, Durabond, e-panel, Etalbond, Phenolics, Plastic/Acrylic, Plexiglass, Titanium Composite Material (TCM), Wood. SPECIFICATIONS: Diameter (D): 3/4; Angle (a): 135; Cutting Height (B): 1/2; Shank (d): 1/4; Overall Length (L): 2-1/4; B1: 9/64; Type: Carbide Tipped V-Groove; Max RPM: 28,000; Flutes: 2; D1: 0.080"; a1: 22.5.