FOR REMINGTON Remington suggests that you change the heads every 12 months for best results.
REMINGTON replacement cutters and heads SP-10
Secura French Press Replacement Screens, 3.82 inch for 34 oz, Stainless Steel
Shaver Replacement Head Compatible with Remington RX7 XR1600 XR7100 Series and BOSS XR7120, 5 Floating Blade Shaving Head Replacement Part with Anti Clog Design for Rotary Electric Shavers
RX7 Shaver Replacement Heads Compatible with Remington XR1600, RX7, BOSS XR7120 - Replacement Blades Parts for XR7100 Series (1 Piece)
RX7 Shaver Replacement Heads Compatible with Remington XR1600, RX7, BOSS XR7120 - Replacement Blades Parts for XR7100 Series (2 Piece)
RX7 Shaver Replacement Heads for Remington Balder XR1600/Boss XR7120/XR7100