3mm REPLACEMENT COMB FOR PHILIPS ONEBLADE With this 3mm OneBlade comb you can cut and style your beard just the way you like it. Guarantees unprecedented precision to create the exact look you had in mind - Replacement 2mm comb - For use with Philips Oneblade - Works with: QP2510, QP2511, QP2520, QP2521, QP2522 - Works with: QP2530, QP2531, QP2620, QP2630.