Compatible Models- Sh50 replacement heads compatible with for Shaver Series 5000 (S5xxx), AquaTouch (AT8xx, AT7xx), PowerTouch (PT8xx, PT7xx), Fit for replacement heads 5000 series S5370/84, S5370/81, Shaver AT790/40,S5660/84, S5590/81, S5290/88, S5210/81. Comfortable Shaving- sh50 replacement head compatible with for series 5000 Electric Shavers have cutting system, The skin-friendly design and material of these replacement heads 5000 series allows smooth skin contact and comfortable shaving, painlessly and more clean. Round head design provide your skin from scratching perfectly. The latest upgrade - sh50 replacement blades enhance the shaving experience with an ultra-thin head and 9 , powerful blades inside that cut through your beard quickly without pulling on it. 360-degree shaving is gentle, painless, and cleaner, and the rounded head design is perfect for protecting your skin from nicks and scratches. IMPORTANT: After installing the sh50 replacement heads, apply a small drop of baby oil to each blade and let the shaver run for 10 seconds. These steps help proper, smooth operation and extend the life of your shaver. For best results, replace every 12 months. Compatible models S5000 series blades:S5570 S5560 S5380 S5370 S5230 S5210 S5091 S5130 S5110 S5095 S5090 S5082 S5081 S5080 S5079 S5078 S5077 S5015 S5013 S5011 S5010 S5008 S5000 S5420 S5076 etc. Colour:Silver Material:Metal Package Contents: 3x SH50 replacement heads Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.