Item Type: Phonograph Conversion Arm Material: Aluminum Alloy, Chrome Plated Color: Silver Overall Size: Approx. 80 x 50 x 25mm / 3.15 x 1.97 x 0.98in Diameter: Approx. 80mm/3.15in Inner Hole: Approx. 20mm/0.79in Height: Approx. 25mm/0.98in Model Number: Conversion Arm Package List 1 x Phonograph Conversion Arm 4 x Set Screws 1 x Hole Screw 1 x Hex Wrench 2 x Test Component 1. Due to differences in monitors and lighting effects, the actual color of the item may be slightly different from the color in the picture.2. Due to manual measurement, please allow 0.40.8in measurement deviation. 1Precise Size: Conversion arm is designed with precise holes, diameter is 80mm, inner hole is 20mm, ensure the stable installation without loosening. 2Application: Professional conversion arm plate for LP vinyl record player, old record phonograph, to fix the record player. 3Small And Portable: The size of the phonograph switch arm plate is 80 x 50x 25mm/3.15 x 1.97 x 0.98in, small and lightweight, does not occupy space. 4Premium Materials: Premium aluminum alloy and chrome plated materials, CNC anodized, exquisite sandblasting process, durable. 5Replacement: This HiFi conversion arm is a practical LP phonograph replacement part with set screws, wrench and other tool accessories, easy to install.