This is a kit including a new front bumper and rear vehicle mode parts, and my previously released Vehicle Mode Arm Cover for the Transformers Generations: War for Cybertron - Siege Deluxe Class Ironhide figure. The new front bumper attaches into the two top-most 5mm ports on the stock bumper, and the new rear parts simply plug into the 5mm ports on the bottoms of Ironhide's robot mode feet. Once attached, the front bumper can simply stay attached without needing to be removed for transformation. The new back pieces however need to be removed, and then in robot form, you can flip the parts around and attach them to the bottoms of Ironhide's feet once more as foot extensions, giving Ironhide a bit of extra height in robot form. The "exhaust pipes" on the back pieces also end in 3mm pegs, so Siege effect parts can be attached to them. The Vehicle Mode Arm Cover pegs into the robot mode's shoulder mounted 5mm ports, and can then be held as a shield in robot mode.