Like you, we have needed to tighten jam nuts both on the road and while out off-roading and sometimes scramble to find a large enough wrench. We designed and made a compact set of 10 jam nut wrench sizes consolidated down to 5 simple tools. The sizes includes 13/16”, 1”, 1-1/16”, 1-1/4”, 1-3/16”, 1-3/8”, 1-7/16”, 1-13/16”, 1-9/16” and 2