Flare nut wrench sets have a 6-pt. design that allows more contact with the fastener's sides than the 12-pt. style and prevents rounding the fastener's corners. These double end SAE (inch) wrenches have a different size on each end so that each wrench can be used for two different size fasteners. Wrenches have a standard, fixed head and an opening in the wrench head that allows a line or other obstruction to pass through it.

Flare nut wrench sets with a flex head on each end can swivel up to 90° to access fasteners from multiple angles. The 6-pt. design allows more contact with the fastener's sides than the 12-pt. style and prevents rounding the fastener's corners. These double-end wrenches come in metric and SAE (inch) sizes. They have a different size on each end so that each wrench can be used for two different size fasteners. Wrenches have an opening in the wrench head that allows a line or other obstruction to pass through it. These sets include both SAE (inch) and metric sizes.

These flare nut wrench sets have a gear mechanism on the single end head that allows the wrench to rotate freely in one direction without removing the wrench head from the fastener and repositioning the wrench. The ratcheting wrench head allows a line or other obstruction to pass through it, then closes for full contact around the fastener. The opposite end allows for a more secure grip on the full length of the handle than a double end flare nut wrench. The 12-pt. design has additional grooves that make it easier to connect with the head of the fastener and connect at more angles for better accessibility compared to a 6-pt. wrench. These single-end wrenches come in SAE (inch) sizes.

These flare nut wrench sets have a 6-pt. design that allows more contact with the fastener's sides than the 12-pt. style and prevents rounding the fastener's corners. These double-end wrenches have a different metric size on each end so that each wrench can be used for two different size fasteners. Wrenches have a standard, fixed head and an opening in the wrench head that allows a line or other obstruction to pass through it.

Metric ratcheting flare nut wrench sets have a gear mechanism on the single head that allows the wrench to rotate freely in one direction without removing the wrench head from the fastener and repositioning the wrench. The opposite end allows for a more secure grip on the full length of the handle compared to a double end flare nut wrench. The 12-pt. design has additional grooves that make it easier to connect with the head of the fastener and connect at more angles for better accessibility compared to a 6-pt. wrench. The head design allows for full contact around the fastener while allowing a line or other obstruction to pass through it.