Constructed from aluminum, it offers a and durable design. It has an anodized orange finish that resists corrosion and maintains a finish. hole is equipped with a steel drill sleeve to prevent wear and drilling accuracy.Available in three drilling angles of 30, 45 and 90 degrees, this drill guide is perfect for 90 degree horizontal deck posts and 45/30 degree angled stair railings. The angle is fixed without deviation, and the hole can be drilled quickly and accurately with a hand- drill.Each drilling angle has four sizes of pilot holes to accommodate most cable railing lag screws. They come in sizes 3/8inch(9.52mm), 5/16inch(7.93mm), 1/4inch(6.35mm), 3/16inch (4.76mm) and are compatible with most cable rail lag screws. For more accurate drilling of corner holes, use a correspondingly sized drill bit.WIDE APPLICATION - This drill guide can be used with locking C-clamp and F-clamp to stability during drilling, resulting in burr-free and crack-free holes. perfect for wood, aluminum and stainless steel deck posts for cable railing and DIY woodworking projects. Additionally, the rails include 90-degree V-grooves for drilling in corners and cylindrical surfaces and N-shaped locating slots for precise drilling.Material: aluminumcolour: orangePackage Contents: 1 x Angle Drill Guide Jig