The RuggedMade hydraulic log splitter build kit lets you choose the parts that meet your desired specification. All of our wood splitter build kit bundles come standard with a powerful 2-stage hydraulic pump providing you with the fastest possible cycle times. This 13 GPM hydraulic pump kit comes with the smaller mounting bracket for engine sizes up to 6.5 HP 212cc. (The larger bracket made for bigger engines measuring 8 HP to 15 HP is also available). Each build kit comes complete with a Lovejoy style L095 1/2" coupler to match the pumps shaft diameter and a rubber elastomer (spider). For your engine shaft, we offer keyed couplings in 7/16", 1/2", 9/16", 5/8", 3/4", 7/8", 1" and 1-1/8" sizes so you can choose the right coupling combination for your engine.