【Why Replace The Blade】:Trimmer usage over time will cause the blade to gradually dull. We recommend replacing your blade every 2-3 months to keep it sharp and efficient. 【FIT Model】:Mag Timmer Blade Replacement 2111 Blades Compatible with Wahl Sterling Mag Trimmers Blades,Fits Sterling Mag Trimmer 8841/8143 /8700/ 8779 and Beret 8841 Trimmer 【Premium Professional Blade】: Professional Detachable Hair Clipper Replacement Blades delivers the sharp performance that experts demand.But Blades are not adjustable to a zero-gap, intended for professional use only 【Heat Resistant】: This blade is heat resistant, cooler and more comfortable for smooth cutting. was a good experience 【Customer Support】: If any blade set you purchased does not fit your hair clipper, please contact us any time, Mag Timmer Blade Replacement 2111 Blades Compatible with Wahl Sterling Mag Trimmers Blades,Fits Sterling Mag Trimmer 8841/8143 /8700/ 8779 and Beret 8841 Trimmer