SH50/52 Replacement Blade for Philips Norelco Electric Shaver Series 5000,(S5xxx) AquaTouch (S5xxx) ,PowerTouch (PT8xx, PT7xx) - AliExpress
Amazon.com: SH50/52 Replacement Heads Fit for Philips Series 5000 Electric Shaver, Replacement Blades Head Compatible with Norelco Series 5000 (S5xxx), AquaTouch (S5xxx), PowerTouch (PT8xx, PT7xx), 3-Pack with Brush : Beauty & Personal Care