Material: The blade is made of high-quality material suitable for both wet and dry shaving and is washable. Fine Protective Net: The protective net features rounded edges designed to fit comfortably against your face, with precision slots that effectively capture whiskers and hairs for a safe shave without scratching. Sharp Blades: This upgraded replacement blade head enhances shaving efficiency and saves time. The sharp blades help reduce pulling on whiskers and hairs. Easy to Install: Replacement of the shaving heads can be completed in minutes. After installation, apply a drop of baby oil to each head and run the shaver for 10 seconds to ensure smooth operation. For optimal performance, 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: 6 x Blade Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement may vary by +/- 1-3 cm.