Within 18 months, your electric shaver will cut an average of 6,000,000 hairs. In accomplishing this substantial task, the cutting parts will gradually wear out and your shave may become less close and comfortable. That's why it is recommended to change your shaver's foil and cutter block every 18 months to maintain maximum performance. For an efficient shave every day.Specifications: Color: Silver + Black Material: ABS + Metal Compatibility: Fits all Series 3 Electric Shavers (Fits models: 320 (type 5776), 330 (type 5776), 320s-4 (type 5415), 330s-4 (type 5415), 340 (type 5775), 340s (type 5414), 340s-4 (type 5414), 345s-4 (type 5414), 350cc-4 (type 5412), 370cc-4 (type 5412), 350cc (type 5774), 370cc (type 5774), 380 (type 5773), 380s-4 (type 5416), 390cc-4 (type 5411), 390cc (type 5772), 395cc-3 (type 5772), 3040cc, 3050cc, 3080cc, 3090cc, 3040s, 3020s) Also fits: models 300s and 310s Compatible with all Series 3 electric shaversPackage Included: 1 x Shaving Head Only the above package content, other products are not includedNote: Light and different displays may cause the color of the item in the picture to be slightly different from the real thing. Measurement may vary by +/- 1-3 cm.