The Wahl Professional Standard Peanut Snap-On Clipper/Trimmer Blade is intended for professional use only and is designed to deliver the sharp performance that experts demand. Holding clipper/trimmer firmly, push blades away from front of clipper. Blades will come off in one piece. Then place bottom tab of blade chassis into space provided in trimmer housing and snap into place. Package contains (1) Wahl Professional Standard Peanut Snap-On Clipper/Trimmer Blade #2068-1001. This is the replacement Blade for Wahl Professional Peanut Models #8685, #8685-1301, #8655, and #8663.