REPLACEMENT FOIL & CUTTER: Replacement for Andis 17155 lithium foil shaver, when the foil and cutter get dull, you may replace them to keep your shaver in excellent cutting shape. HYPO-ALLERGENIC: Gold titanium foils for zero finishes that are ultra-thin and suitable for the most sensitive skin without being painful or irritating. BUMP-FREE TECH: The diamond finishing enables dry trimming, zero overlaps, and a super-close, clean shave without generating razor bumps or irritation. EASILY CHANGE: You simply follow the instructions to change the foil and cutter, which is quite convenient and easy. PRODUCT DETAILS: This pro shaver replacement foil and cutter is 1 x 1 x 1 inch in size, weighs 1.12 ounces, and has a length of 1.38 inches. Replacement foil and cutter for the pro foil shaver 17155 packed together.