Phonograph needle house packaged from Radio Shack, 272-DS73. Replaces Pfanstiehl 272-DS77, Radio Shack RS-110, BSR ST-9, ST-8, ST-10, ST-11, ST12, ST-23 (Single tip). Used in: SC5H, SX1H, SX2H, SX1M, SX5M, X1H, X1HE, X2H, X3H, X4H, X5H, X1M, X3M, X5M, etc. P-124 thru P-130. SX-6M One Piece, plastic. Tips: .7 mil diamond and .7 mil synthetic sapphire. Speeds: 33, 45 & 78 RPM. House packaged. Color may be gray, black or white. Different ST numbers may be printed on arm of needle holder. New. If you don’t see your needle listed, e-mail me and I will find it for you or list it. Search my store items and descriptions. Enter your needle number, cartridge number or model number. E-mail for further help. IF YOU ARE PURCHASING A NEEDLE Model numbers are provided in manufacturer’s references for the cartridge they installed in those models. If the cartridge has been changed by a dealer or user, this needle will not be correct for the model numbers listed, as it is the cartridge that determines what needle is needed. Be sure it looks like your old needle.