Standard 1/2' aluminum turntable headshell: Material: Aluminum Surface treatment: High quality 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, 24K gold plated 4 pins Headshell barrel size: 8mm diameter X 12mm length