VSH-3 — Sharpens all Philips/Norelco shavers using these replacement heads: HQ-9. – Vollco Shaver Sharpeners
Amazon.com: HQ9 Replacement Heads for Philips Norelco Shaver Series 8100/8200/9100/AT920/AT928 Electric Shaver High Precision Replacement Razor Blades (Free Cleaning Wipes+Brushes) : Beauty & Personal Care