RockJock's JT Rear Antirock Arm Hardware Pack includes, 2) 3/8 inch-24 x 1 3/4 inch long socket head allen bolts,, 2) 3/8 inch stainless steel passivated flat washers,, 2) 5/16 inch-24 x 7/8 inch flat head allen bolts and, 2) 5/16 inch x 1.350 inch O.D. aluminum body washers. This kit is all of the hardware for a pair of arms, to affix them to the sway bar.