Material: The shaver blade is made of high-quality material, suitable for both wet and dry shaving, and is washable. Fine Protective Net: The rounded edges of the protective net provide a 360-degree fit to your face, and precision slots help efficiently capture whiskers and hairs. This allows for a safe and smooth shave without scratching. Sharp: This upgraded replacement head improves shaving efficiency and saves time. The sharp blades reduce pulling on whiskers and hairs. Easy to Install: Shaving heads can be replaced in a few minutes. After installation, apply a small drop of oil to each head and run the shaver for 10 seconds to ensure proper operation. For best results, replace the shaving heads every 12 months. Compatible With the Following Models: PT724/41, PT729/41, S738/17, S738/82, S1150/81, S1160/81, S1570, S1560/81, S3310/81, S3310/86, S3560/81, S3560/86. Color: Silver Material: Plastic + Metal Package Contents: 9 x Shaver Blade 6 x Shaver Blade 3 x Shaver Blade Only the above package content is included; other items are not included. Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.