Feature:1. [Sturdy Construction] The aluminum profile drill guide is made of aluminum alloy and brass, with precise processing and anodizing treatment, ensuring durability.2. [Wide Compatibility] The aluminum profile punch locator is compatible with various aluminum profiles, including 20mm, 30mm, 40mm sizes, suitable for various installation scenarios.3. [Enhanced Aesthetics] Designed for countersunk screws, making the installation smoother and more beautiful, enhancing the functionality and appearance of your work.4. [Easy to Use] Remove the copper column, slide the product into the aluminum profile, punch the hole at the center 25mm from the top of the punch locator. Before locking the hole, use a ruler to confirm the position.5. [M8 M6 Drill Bits] Equipped with M8 and M6 stepped drill bits, the aluminum profile punching auxiliary tool meets different drilling needs.Specification:Item Type: Aluminum Profile Drill GuideMaterial: Aluminum AlloyPunch Guide Size: Approx. 100x39mm or 3.94x1.54inDrill Sleeve Size: Approx. 14mm or 0.55in, 10mm or 0.39inStep Drill Bit Size: Approx. 8.5mm or 0.33in, 6.5mm or 0.26inStep Drill Bit Length: Approx. 90mm or 3.54inStep Drill Bit Shank Diameter: Approx. 10mm or 0.39in.Package List:1 x Aluminum Profile Drill Guide1 x M8 Step Drill Bit1 x M6 Step Drill Bit1 x 10mm Drill Sleeve2 x Limit Ring Wrench