[High Precision Measurements] 3D multi-angle carpenters square features clear and precise laser-engraved metric scales on both sides, allowing for quick and accurate measurements. The minimum measurement unit is 1 millimeter with minimal error. The included positioning auxiliary tool also helps inprove the measurements accuracy. [Premium Aluminium Alloy Material ]Our woodworking square is crafted from aluminum alloy with an oxidized surface, making it rust proof, corrosion resistant and durable. Its sturdy structure prevents deformation, ensuring accuracy over long-term use. Additionally, it is lightweight (only 150 gram) and detachable, making it easy to carry without any burden. [Multi-Angle Design]Our compact speed square is designed with 6 marking hole with 1/16 inch diameter for drawing angles from 22.5 to 90 degrees. It also includes preset angles of 22.5, 30, 45, 60, and 67.5 with corresponding 1/4 angle pins, enabling easy and accurate angle drawing. Not only ideal for woodworking and construction, but also perfect for DIY enthusiasts, decorators, and engineers. [11 Types of Drilling Hole & Versatile]The combination square comes with 11 different diameter drilling holes, ranging from 3mm to 11mm, compatible with various standard screw sizes, which allows you to easily find the matching hole and complete drilling tasks quickly. It also combines the following functions: seting square, parallel lines, vertical lines, drilling positioning, and T-shaped. [Detachable Design]Set includes 1 speed square, 2 screws, and 1 hex wrench. The detachable design allows for easy assembly and disassembly to suit various applications. Tightening the screws transforms it into a 3D measuring tool. When not needed, use the hex wrench to remove the screws, providing a square ruler and a carpenter's square for versatile measuring tasks.