High tensile strength 4340 Chromoly is heat-treated tempered and induction hardened to produce these heavy-duty axles that are up to 40% stronger than stock 1040 axles. Front axle shaft kits include everything you need to complete the job. Both passenger and drive side inner and outer axle shafts seals U-joints and clips. This chromoly inner front axle shaft from Alloy USA fits 87-06 Jeep Wrangler with a Dana 30 front axle. It fits the right side.