This listing is for the Cardback Restoration Kit:
 
GI JOE 3&3/4 INCH ACTION FIGURE RESTORATION KIT
Sgt. Slaughter  (Custom) - 1985
 
Each kit includes:
 
The fully-detailed cardback featuring the correct colors, corners, peg punch, card thickness and using only archival materials
Correct size and style bubble, which also includes bubble insert tray for this particular figure. 
Each card is discretely marked as a restoration item on the back.