Compatible with Norelco 7000, 5000, 3000 Series, QT series, QS series, AT series, PT series, QG series, BG series, HQ series, RQ series, XL series, XLCC series, X series, HS series, QC series, Grooming Kit Bodygroom, Beard Trimmer, Beard, SensoTouch, Precision, Spectra, Sensotec, SmartTouch XL, Speed XL, Quadra, Cool Skin, new generation Cool Skin, Style Shaver, PowerTouch, Suker Hair Clipper, Arcitec Compatible with Norelco HQ8505, 3000, 3100, 3500, 4100, 4200, 4500, 5000, 5100, 5200, 5500, 5600, 5700, 6100, 7000, 7100, 7200, 7300, 7400, 7500, 7600, 7700, 8000X, 8500X, 8900, 9300, 9700 Series Shavers. Fits most Norelco Aquatec, Arcitec, and Multigroom shavers, razors, and trimmers. Compatible part numbers: HQ8505, AT810/41, AT830, BT5210/42, BT7215/49, PT724/41, PT730/41, QG3364/42, QG3330, QG3330/60, QT4018/49, S9311/84, S7370/84, S9721/84, YS524/41, HQ-8505 7-piece set: Includes 6 charging heads of different shapes suitable for various electric clipper interfaces, and 1 DC 5V USB to 5.5x2.1mm charging cable Built-in pure copper conductor for strong conductivity, enabling faster and more stable power transmission. Outer layer made of PVC environmental protection material, safe, durable, and eco-friendly Note: Please check your product interface size before purchasing