The Philips Norelco OneBlade replacement blade trims, edges, and shaves any length of hair. The unique OneBlade shaving technology integrates a fast moving cutter (200x per second) with a dual protection system to give you an efficient comfortable shave on longer hairs. OneBlade does not shave too close, so your skin stays comfortable. The replacement blade last up to 4 months (For best shaving experience. Based on 2 full shaves on face per week. Actual results may vary.) Fits on all OneBlade, OneBlade Face + Body, and OneBlade Pro handles. Pack includes: 3 replacement blades.