This will fit to bottom of Vulcan Air Arms and many other air guns to allow you to fit Bipod and other accessories
The sling stud screws and nuts are made of stainless steel the rail is made of aluminium.
1x 100mm aluminium
1x alen key
You need to install them like 5th photo.
The 5th photo just to show you how to install them nothing from 5th is included.