Features 1.PRECISE SIZE: Phonograph conversion arm is designed with precise holes, 80mm diameter, 20mm inner hole, to ensure a snug fit and no loosening. 2.APPLICATION: Professional HiFi conversion arm plate, can be used for LP vinyl record player, old record gramophone, play the role of fixed record player. 3.PREMIUM MATERIAL: Vinyl record player special arm base, using aluminum alloy and chrome plated material, CNC anodized, exquisite sandblasting process, durable. 4.COMPACT AND LIGHTWEIGHT: This phonograph conversion arm plate is 80 x 50 x 25mm / 3.15 x 1.97 x 0.98in in size, small and light, does not take up space, easy to install. 5.REPLACEMENT: LP turntable conversion arm plate is a practical replacement part, simple black appearance, fine workmanship, can match your record player. specificationItem Type: Phonograph Conversion Arm Material: Aluminum Alloy, Chrome Plated Color: Black 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 PackageList1 x PhonographHiFiConversionArm4 x Set Screws1 x Hole Screw1 x Hex Wrench Note1. 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 0.4?0.8in measurement deviation.