Features: Designed for beam production and repair tools, providing a professional solution for violin maintenance. Made of Aluminum Alloy, light weigt, has good durability . Our replacement parts are suitable for violins, violas, and cellos. Easy installation and repair processes. They provide the best solution for luthiers. Our tools are easy to use and ensure a comfortable grip, making your instrument maintenance an ease. Specifications: Materials: Aluminum alloy Styles: Set of 5 pieces/240mm/200mm/152mm/120mm/80mm 240mm size: about 285x100mm/11.22x3.94inch 200mm size: about 242x88mm/9.53x3.46inch 152mm size: about 195x80mm/7.68x3.15inch 120mm size: about 156x68mm/6.14x2.68inch 80mm size: about 118x65mm/4.65x2.56inch Package Includes: 1/5Pcs Violin Beam Clamp note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.