1 Set of Adjustable Scissor Blades, 2 Hole Trimmer Replacement Blade Compatible with Wahl 1006, Super Taper #8400 (Silver) High quality material: The adjustable scissor blade is made of stainless steel, corrosion resistant and wear resistant, high quality material can be used for a long time, sharper and stronger, so it can work efficiently and provide better results Replacement method: Adjust the blade to the full forward position, place the small blade on the scissors drive finger, then place the large blade at the bottom on top of the small blade, replace the screw and partially tighten; make sure the extreme left-handed teeth of the top blade must be on the bottom blade on the first small tooth of the blade; after the blades are aligned, tighten the screw, open and close a few times, and then check the alignment of the blades Wide Compatibility: These 2-hole scissor replacement blades are compatible with 8148, 8504, 1919, 2241, 2240, 8591; different from the size of the screws, there are large screws and small screws, 8148, 8504, 2241, 2240 are small screws, 8591 and 1919.big screw Practical: These replacement blades are equipped with 2 holes for easy use, provide 2 different sizes of hole diameters for your nails, including 3mm and 1mm, they can be easily attached and maintained, in addition, this blade can provide An even and clean haircut option.