REPLACEMENT HEAD FOR BRAUN SERIES 3 SHAVERS: Compatible with for Braun series 3 shaver replacement head 300s, 310s, 3010BT and all Series 3 foil razors. PEAK SHAVING PERFORMANCE: 21B replacement head for Braun shaver includes 3 independently floating shaving elements, these flexible shaving units are ergonomically designed to adapt to your facial contours for a great comfort and close shave. QUALITY CRAFTSMANSHIP: S3 replacement head is built with precise tooth comb technology and bionic mesh design. The comb captures more hair in each stroke, the bionic meshes prevent pulling hair, enable a comfortable and efficient shaving experience. GOOD QUALITY MATERIAL: S3 wet and dry replacement head is made of top quality material with the ability of waterproof and rust-resistant, you can enjoy both wet and dry shaving. It is recommend to replace 21B series 3 foil and cutter every 18 months. EASY TO REPLACE, EASY TO CLEN: Pull the old series 3 shaver head out, then click the 21B razor head on. Come with a cleaning brush, get a fast clean by rinsing the 21B series 3 replacement blade under a tap, or have a deep clean using the cleaning brush. Color: As Shown Material: plastic+metal Package Contents: 2 x Shaver Head 1 x clean brush