The multi precision blades raise and cut all hairs and remaining stubble – all in a few strokes.Change the blades every 2 years for 100% performanceSuper Lift & Cut 2 blade system lifts the hair and cuts it off the skin surfaceSH50 replacement heads are compatible with Shaver series 5000 (S5xxx), PowerTouch (PT8xx) and Star Wars shaver SW5720, SW5710, SW5700. | Philips | | SH50/50 Replacement Blades for Series 5000 Electric Shavers | Stainless Steel | Best Buy