Like you, we have needed to tighten jam nuts both in the shop 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 3/4 inch , 7/8 inch , 15/16 inch , 1-1/8 inch , 1-5/16 inch , 1-1/2 inch , 1-5/8 inch , 1-11/16 inch , 1-3/4 inch and 1-7/8 inch . The center of the jam nut wrenches have a square hole for a 1/2 inch ratchet.

The jam nut wrenches are laser cut here in the USA at Motobilt from 3/8 inch thick heavy duty steel plate. The jam nut wrenches are sold as a set of 5 and ship to you bare steel. You will need to oil them our paint them to prevent rust.

For those of you using them in your off-road tool bag we recommend painting them a bright color to make them easy to spot if you drop them on the trail.

For 5 additional wrenches and 10 more wrench sizes see MB0540 Jam Nut Wrench Set 2 which can be purchased separately.