Suitable for 1000 series models: 1735, 1775, 170, 180, 190, 5728, 5729 and other models can also be used for series models: CruZer3 CruZer4 CruZer5 Feature:Easy to install. Clean the before installing. Description:The Replacement Cutter's Head with Microcomb 'time saver' technology to catch and feed more hair into the cutting parts. Floating Middle Trimmer which better adapats to the of your face. Change your shaver parts for even better shaving performance. Within 18 months on average, a for shaver will cut an average of 6,000,000 hairs. In accomplishing this substantial task, the cutting parts will gradually wear out and your shave may become less close and comfortable. Therefore we recommends changing your shaver's foil & cutter block every 18 months to maintain your shaver's maximum performance. For a perfect shave every day. Colour: as shown Material: stainless steel Package Contents: 3 * Shaving accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.