Made of metal material, sturdy and durable to use. Easy to install, having advantages of smooth surface and exquisite workmanship. Clean the razor before installing. Item type: electric razor replacement cutter bracket Compatible with: for Braun 30B /30S /31B /31S /51B /51S For all 51S models including: Type: 5643, 5644, 5645, 5646, 5647, 5649, 5751, 5757, 5758 Model 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, ContourPro Item Type:Razor Blade color:Silver Material:Plastic+metal Package Contents: 1 x shaver blade Only the above package content, other products are not included. Note: Light reflection 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.