https://www.philips.co.uk/c-p/HS740_15/hs740-blade-refill-replacement-electric-shaving-heads
HS740 Blade Refill Replacement electric shaving heads HS740/15 | Philips
Head Shaver Pro replacement heads are powered with self-sharpening 36 ComfortCut blades made of Swedish steel. Replace them every 6 months and get your shaver...
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