Type: Standard 1/2′ aluminum turntable headshell Lot size: 45 pieces (headshells) per lot Material: Aluminum Surface treatment: High quality starlight silver paint Application: Headshell fits most turntables with the S-Shaped, straight or SME type 4 pin connection tonearm with a standard H-4 Bayonet Mount Connector Type: 4 prong, H-4 Bayonet Mount, Gold plated 4-pin contacts Headshell barrel size: 8mm diameter X 12mm length Wire Type: Each wire is color coded. Wires are made of oxygen free copper (OFC) for a cleaner sound. The cartridge connector terminals were made from high quality Sn-P bronze with high conductivity 24K gold plating Sn-P bronze is an elastic copper-based alloy with the requirements of high accurate of dimension, good surface quality, excellent shape of strip and properties for production. terminals dimensions: inside diameter 1.20mm, fits pins 1.2~1.3mm well Each terminal end is wrapped in color coded shrink tubing. Terminals are hand soldered for reliability. Mount on cartridge according to the color of shrink tubing: BLUE = LG (left ground) GREEN = RG (right ground) WHITE = L (left positive) RED = R (right positive)