FIT:Compatible with Remington Balder Pro Head Shaver Model XR7000/XR1500/XR1501(Not compatible with XR1600/RX7/ BOSS XR7120 and XR7100 shavers) EFFICIENCY:5 Dual Track Shaver Heads,Shaven Head In Under 2 Minutes. EASY TO USE:Multidirectional Pivot, Flex, & Contour ,Make the blades Maximum Skin Contact MATERIAL:360 Degrees without Dead Ends.Round head design perfectly protect your skin from scratching You can enjoy a safe and smooth shaving without scratching. Shaver Replacement Blades,suitable for Women/Men Wet Dry Hair Remover Replacement Heads. Dear customers: To keep Your Shavers Super Performance.We recommend that you replace shaving heads every 3-6 months.Thank you for purchasing our products. If you have any problem or suggestion, you can contact me at any time. Sincerely