This is an essential tool for working enthusiasts. The product is made of high-quality materials, with compass tips crafted from 45# steel for durability. Its compact size allows for easy portability, making it convenient to carry anywhere. Features: This compass features an adjustable radius for convenient customization. It is designed for smooth line drawing and offers a comfortable user experience. Available in two sizes: large and small, allowing you to choose the preferred option. The large model has a maximum radius of 750mm (29.5 inches), while the small model reaches up to 450mm (17.7 inches). The compass is lightweight and compact, ensuring easy transport and storage. The tip is made of 45# steel, known for its high strength, resistance to deformation, and long service life. The radius can be adjusted up to 180 degrees, allowing precise customization. Equipped with a rotary switch to adjust and control the pen's holding length. The body is constructed from zinc alloy and plastic materials, enhancing durability. Specifications: Material: Plastic Type (optional): - Type 1: Small - Type 2: Large Maximum Radius: - Type 1: 450mm / 17.7 inches - Type 2: 750mm / 29.5 inches Unilateral Length: - Type 1: 250mm / 9.8 inches - Type 2: 400mm / 15.7 inches Model Dimensions: - Type 1: 250 x 900mm / 9.8 x 35.4 inches - Type 2: 400 x 1500mm / 15.7 x 59.1 inches Package Size: - Type 1: 260 x 30 x 30mm / 10.2 x 1.2 x 1.2 inches - Type 2: 460 x 30 x 30mm / 16.1 x 1.2 x 1.2 inches Package Weight: - Type 1: 210g / 7.4 oz - Type 2: 260g / 9.2 oz Packing List: 1 x Divider