Used in combination with humbucker mounting screws to mount humbuckers to humbucker mounting rings.
Size: For #3 screws.
Length (uncompressed): 1 1/2"
Material: Stainless Steel
Tech's notes: "Screw and spring sizes/types are NOT standardized throughout the entire guitar industry. Don't just go by the product names. ALWAYS double check the specifications to ensure this is the correct part for your needs."