This is an HPI Front and Rear Sway Bar Set for use on the Savage X Trucks. Two different stiffness options Fully adjustable design allows driver to vary stiffness for track conditions Two 2.0mm black bars (medium stiffness) Two 2.4mm silver bars (firm stiffness) Black plastic parts tree All mounting hardware 1.5mm hex wrench Instructions Savage X truck lmm 12.22.09 ir/jxs &