Audio Technica AT-LH18/OCC ultra-hard aluminum headshell is engineered for ultra-light MC cartridges and heavy cast aluminum tonearms with sufficient counterweight range. The integrated TechniHard ultra-rigid aluminum body restrains mechanical resonance to the minimum, purifying audio background and revealing tiny musical textures. Fitted with lossless PCOCC single-crystal copper internal wiring, it transfers weak analog signals with zero attenuation for full-range audio reproduction. The standard 1/2" four-pin mount supports all mainstream cartridges, paired with adjustable screws to calibrate azimuth and tracking distance accurately. Weighing 18g bare, it adds necessary mass to ultra-light moving coil cartridges, reducing counterweight extension and improving overall tonearm damping for stable playback, ideal for heavy direct-drive DJ turntables and high-end audiophile tonearms.