General description Comb teeth technology organizes and guides messy beards into the trimmer, reducing the repeated shaving process and making shaving more efficient and comfortable. This replacement shaver foil head enhances your shaving experience with a 25% better shave. Technical specifications Material: ABS and stainless steel Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with 3 Series models: 300S, 301S, 310S, 320S, 330S, 340S, 360S, 380S, 3000S, 3010S, 3020S, 3030S, 3040S, 3080S, 350CC, 370CC, 390CC, 3050CC, Cruzen, and more Package Contents: 4 * 21B Shaver Head, 4 * Clean Brush Installation Easy to install Usage For better performance, please clean regularly The replacement head helps your shaver regain performance and achieve a closer shave Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the real thing