Fangrui Product Details Advantage: The Countersunk Washer Is Made Of Anodized Aluminum Alloy, Providing Durability And Resistance To . The Flat Cup Head Design Ensures A Flush And Secure Fit When Used With Screws. The Vibrant Color Adds An Aesthetic Touch To Your Projects. Instruction: To Install The Countersunk Washer, Simply Place It Between The Screw Head And The Being Fastened. Tighten The Screw To Secure The Washer In Place. This Washer Is Good For Use In Applications Where A Flush Finish Is Desired. Application: The Countersunk Washer Is A Versatile And Fastener That Can Be Used In A Variety Of Applications, Including Automotive, Construction, Plumbing, Electrical Applications, Industrial Settings, Robotics, Diy Models. It Can Be Used To Fasten Metal, Wood, Plastic, And Other Materials, And Is Good For Applications Where A Flush Finish Is Desired. Note: When Using The Countersunk Washer, Be Sure To Choose The Appropriate Size For Your Application. It Is Also Important To That The Washer Is Properly Seated Between The Scre