Features of Magnetic Stylus: Fixed hole distance of recording head: 13 mm (measuring center distance of two holes). Four wiring marks on the singing head: R+, R-, L+, L-. Standard wiring color for record player: R+ = red, R- = green, L+ = white, L- = blue. Recommended tracking force range: 1.5g2g, adjustable according to personal preference. Features of Turntable Headshell (4 Pin Contacts): Compatible with phono turntable headshell for various turntables. Fits both S-shaped and straight tonearms. Plated 4-pin contacts. Includes four color-coded OFC (oxygen free copper) soft lead wires with gold-plated terminals for improved sound clarity. Each terminal is enclosed in a clear insulating sleeve. Model Number: Headshell Motor: For turntable Speeds: 33, 45, 78 RPM Stylus Type: Magnetic Stylus Color: Black Material: Metal + Plastic Package Contents: 1 x Magnetic Stylus with LP Vinyl Needle 1 x Replacement Phono Turntable Headshell Note: Light and display differences may cause slight variations in color between the image and actual item. Measurement error allowance: +/- 13 cm. Only the items listed above are included; other products are not included.