Feature: 
Flexible shaver head to capture even more hair in one stroke (vs. previous Series 3. Tested on 3-day beards)Compatible with the generation of the new generation series 3 (3070cc, 3050cc, 3045, 3040, 3030, 3020, 3010 and 3000) old series 3 (350, 350cc, 300, 310, 340, 320) and cruZer shaving (cruzer 6 clean shaving, shave clean cruZer 5)
Easily replace 21B shaver parts every 18 months to maintain maximum performance
Replacing your shaver head is simple. Just press on the sides and click off your current head. To fit the new shaver head, simply click it onto the shaver.

[Close & Clean]: flexible shaver head to capture even more hair in one stroke.
        
[Efficient & Gentle]: The replacement head gets your shaver back to 100% performance and a closer shave.        
        
[Peak Performance]: to maintain your best shave, we recommend replacing the shaver head every 18 months.        
        
[Simple Replacement]: easily attach your new shaver head - just by clicking it on.

This replacement head compatible with series 3 shavers : 300S，301S，310S，320S，330S，340S，360S，3000S，3010S，3020S， 3030S，3040S，3045S，3050S，350CC，370CC，3050CC，3700CC，3010BT，320，330，340， CruZer3 shavers and Cruzer6 shaver and so on.