These Fusion ProGlide blade refills can be used with any Fusion razor handle. One razor blade refill equals up to one month of shaves. The razor comes complete with a precision trimmer on the back of the razor, ideal for edging tough areas such as under the nose and sideburns. With Gillette’s thinnest and finest Blades (first four Blades, same as ProShield), ProGlide allows less tug and pull vs Fusion. 2012 Gillettes thinnest, finest blades (first four blades, same as ProShield) Less tug and pull (vs Fusion) Five precision blades, helping reduce pressure per blade for a comfortable shave (vs Mach3) Precision trimmer on back, great for edging tough areas (nose and sideburns) One razor blade refill equals up to one month of shaves FlexBall Technology That Responds to Contours, 4 Refills Less tug and pull (vs Fusion) Five precision blades, helping reduce pressure per blade for a comfortable shave (vs Mach3) Precision trimmer on back, great for edging tough areas (nose and sideburns) One razor blade refill equals up to one month of shaves Gillette Fusion ProGlide Men’s Razor Blade Refills feature five precision Blades for high comfort.