Features: brand new and high quality Made of high quality aluminum alloy & brass material, wear resistant, not easy to rust, not easy to break and deform, and has a longer service life. This product adopts ergonomic design and is very convenient to use.Copper positioning block can be moved to the desired position and then used by tightening the screws.It is not easy to slide and is suitable for all kinds of steel rulers. This product is small in size and light in weight, which is very convenient to carry around. Woodworking positioning block steel ruler is suitable for woodworkers and home users, and has a wide range of uses. Suitable for all kinds of rulers, and not easy to fall. You can easily draw parallel lines with this tool, for ideal for engineers, craftsmen, model makers, etc. Specifications: Material: Aluminum Alloy & Brass Size: approx 40x60mm/1.57x2.36 inches Package Includes: 1x Steel Ruler Positioning Block note: 1.Please allow 1-3cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.