General description For use with the ProFoil lithium foil shaver, this replacement set includes 2X shaver nets and cutter heads to keep your shaver in optimal cutting condition. Regular cleaning of the shaver before installation is recommended for best results. Technical specifications Material: Metal Color: Silver Package Contents: 2 pairs of knife nets, 2 pairs of knife heads Measurement allowed error: +/- 1-3 cm Usage For maximum performance, it is advised to replace the blades every 6 months. The head and body assembly can be easily removed for cleaning; simply rinse, wash, and dry before reinserting into the body.