This is a stock type bed leveling screw, spring, and adjustment nut bundle.
We find these springs work best when used with 3 aluminum washers, as additional spacers. You always want some compliance to your bed to aid in avoiding damage during a failed print, or collision.
Many S5 printers need a bit of extra height on the bed, and the included washers/spacers work great for all versions of CR-10, and Enders.
Hardware for one corner of bed per package.
1 x Spring
1 x Nut
1 x Screw
3 x Aluminum Washers