General description Pack 51S Replacement Blade and Shaving Head for Series 5 8000 Shaver is designed for easy installation and compatibility with various models. Ensure to clean the shaver before installing the replacement parts. Technical specifications Grid cover dimensions: 4.4 x 2.5 x 2 cm Knife head dimensions: 3.1 x 1.7 cm Material: Nylon and stainless steel Color: Silver Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with all 51S models including: 5643, 5644, 5645, 5646, 5647, 5649, 5751, 5757, 5758, 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, 550s-3, 550s-4, 550cc-4, 560s-3, 560s-4, 565cc-4, 570cc-3, 570cc-4, 590cc-3, 590cc-4, 8385 C&R, 8374, 8377 - Series 5, ContourPro Package contents: 1 x mesh cover, 1 x knife head Installation Ensure to clean the shaver before installation. Check the replacement part number by pushing open the shaver's