【2 in 1 VALUE SET】 Each kit contains brand new 21B foil and cutters Shaver heads x2. In addition, we try to use simple but effective packaging to avoid wasting paper due to over-packaging. 【PROFESSIONAL FOR SHAVING】The 21b shaver replacement head applies floating 3-blade, precise tooth comb technology and bionic mesh design, which can bring you a more comfortable, efficient and pleasant shaving experience. 【SUITABLE FOR】 Compatible with Series 3 shaver replacement heads 3000s 310s 3040s 3050cc 3010s 3070cc 3080s 3090s 350cc-4 370cc-4 380s-4, 3090cc, 320 330 340 360 380s. 【GOOD ATTRIBUTES】 The S3 shaver replacement heads are made of premium materials with good waterproof and rust-resistant properties, making it easy to remove and clean after shaving. 【SERVICE LIFE】 According to laboratory data, it is recommended that you replace the Foil & Cutter replacement head every 12 to 15 months to reduce the degradation of shaving performance. 2Pack 21B S3 Electric Replacement Shaver Head Accessories for Series 3 Shaving Razor Head, Suitable for S3 3040s 3000s 3050cc 3010s 3070cc 3080s 3090s 310s 3090cc Etc.