Suitable for Braun 40B: CT2S, CT4S, CT2CC, CT4CC, CT5CC, CT6CC2. Made of high-quality materials to ensure continuous, efficient, and easy-to-use performance. For the best shaving results, Braun recommends replacing the shaving head every 18 months. After 18 months of use, the electric shaver may have trimmed over 6 million hairs, which can gradually reduce cutting efficiency. The replacement head features special processing technology to enhance the shaver's texture and appearance. Replacing the head helps restore the shaver’s performance for a closer, more comfortable shave and maintains optimal condition over time. Material: Plastic + Metal. Color as shown. Package includes: 2 x Cutter Head, 1 x Cleaning Brush. Light shooting and different displays may cause slight color variations between the item in the photo and the actual item. Measurement error: +/- 1-3 cm.