Compatible with Braun32B, Braun 3 series, such as 301S, 310S, 320S, 330S, 340S, 350CC, 360CC, 360, 370, 380, 5774, 5775 and more. Note: 21B, 21S, 32B and 32S are mutually compatible structures. The 21B is suitable for new 3 Series shavers without head locking function.
eBay