Auction is for a brand new set of Masterpiece Grimlock Feet Boosters from Fanstoys. These boosters provide Grimlock with added size in robot mode, to help him scale with the other Fanstoys dinobots. They also make him taller than Masterpiece Optimus Prime.The boosters easily snap on the bottom of Grimlock's feet and can also be stored on his back in dino-mode, to give him rocket launchers. Boosters were only included with the first run of Fanstoys Scoria figures and have long sold out. ***Please note, Grimlock and Scoria figures not included.*** High bidder to pay by Paypal and free shipping. Good Luck and Thanks for Looking.