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.