Drill guides are available in 30-degree, 45-degree, and 90-degree drilling angles. Suitable for 90-degree horizontal deck posts and 45-degree and 30-degree angle stair railings. Angle is fixed without deviation. Features four drilling guide hole sizes for each angle: 3/8 inch (9.52 mm), 5/16 inch (7.93 mm), 1/4 inch (6.35 mm), and 3/16 inch (4.76 mm). Each size is compatible with most cable railing cable protector sleeves and lag screws. An efficient and compact angled drill guide that is easy to carry. This drill guide can be used with locking C-clamps and F-clamps to prevent the drill from wobbling during operation, allowing for clean, burr-free, and crack-free holes. Ideal for installing wood, aluminum, and stainless steel posts and deck railings, cable railings, stair deck railings, and DIY railing projects. Color: Red Material: Aluminum alloy Package Contents: 1 x Drill Guide Note: The package includes only the items listed above. Other products are not included. Lighting and display differences may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement may vary by +/- 1-3 cm.