2 Sets Professional Replacement Clipper Blades, 2 Holes Adjustable Hair Clippers Product Details Any brand name mentioned is just applied to show compatibility, not working as trademark. Features: Quality material: The adjustable clippers blade is made of stainless steel, corrosion-resistant and wear-resistant, the quality material can be applied for a long time, it is more pointed and stronger, thus it can work efficiently and provide better effects. How to replace: Adjust the blade to full forward position, and put the small top blade over the clipper drive finger, then place large bottom blade on top of small top blade, replace the screws and partially tighten. Make sure the extreme left hand tooth of top blade must be on the first small tooth of bottom blade. After blade is aligned, tighten screws, turn switch on and off a couple of times, and then check alignment of blades. Functional and practical: These replacement blades are designed with 2 holes for easy using, 2 different sizes of hole diameter are provided for your clipper, including 3 mm and 1 mm, they can be attached easily and also convenient to maintain, in addition, this blade can provide an even and clean hair cutting option. Specifications: Material: stainless steel Color: as pictures shown Quantity: 2 sets (4 pieces) Package includes: 2 Sets of clipper blades Note: Please allow a little difference in size because of manual measurement. Pointed items, please be careful when using and store them in places that away from kids. Quality material: the adjustable clippers blade is made of stainless steel, corrosion-resistant and wear-resistant, the quality material can be applied for a long time, it is more pointed and stronger, thus it can work efficiently and provide better effects How to replace: adjust the blade to full forward position, and put the small top blade over the clipper drive finger, then place large bottom blade on top of small top blade, replace the screws and partially tighten; Make sure the extreme left hand tooth of top blade must be on the first small tooth of bottom blade; After blade is aligned, tighten screws, turn switch on and off a couple of times, and then check alignment of blades Wide compatibility: these 2 hole clipper replacement blades are compatible with 8148, 8504, 1919, 2241, 2240, 8591; Different from the size of screws, there are large screws and small screws, 8148, 8504, 2241, 2240 are small screws, 8591 and 1919 are large screws Functional and practical: these replacement blades are designed with 2 holes for easy using, 2 different sizes of hole diameter are provided for your clipper, including 3 mm and 1 mm, they can be attached easily and also convenient to maintain, in addition, this blade can provide an even and clean hair cutting option Package content: package contains 2 sets of clipper blades, convenient for your daily use and replacement; Color: as pictures shown Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.