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, and models 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. Fits most Norelco Aquatec, Arcitec, and Multigroom shavers, razors, and trimmers. Compatible part numbers include 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 provides strong conductivity, faster, and more stable transmission. Outer layer made of PVC environmental protection material for safety, durability, and long-term use. Note: Please check your product interface size before purchasing.