Easy to install. Clean the installation. Make your model right. Description: for 5 Series 8000 51S Interchangeable Film Head and BladeCompatible with:For all 51S models, including:Type: 5643, 5644, 5645, 5646, 5647, 5649, 5751, 5757, 5758Model No.: 8970, 8975, 8985, 8986, 8987, 8990, 8991, 8995,8595, 8795, 8581, 8583, 8585, 8588, 8590, 8781, 8783, 8790, WF1s, 510, 550, 560, 570cc, 590cc,530s-4, 550, 550s-3, 550S-4, 550cc-4, 560, 560S-3, 560S-4, 565cc-4.570cc, 570cc-3, 570cc-4.590cc, 590cc-3, 590cc-4, 8385 C&R,8374, 8377 Series 5, ContourProColor: SilverMaterial: Nylon + Stainless Steel Size: 4.4*2.5*2cm mesh cover, 3.1*1.7cm cutting headPackage Contents: 1 x Replacement Foil Head1 x Shaver BladeNote: checking the shaver spare part number is as follows: open the shaver sideburns trimmer, and you will see the spare part number (for example, 10B, 30B, 32, 51S, etc.)Only the above package content, other products are not included. Note: The light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.