Skip to main content


Story and photography by Capt. Vince Daniello

My kit centers on one set of wrenches (some metric and some SAE) that covers both systems with no overlap. A 7/8-inch wrench is tight enough to turn any 22-mm bolt unless it’s completely seized (although a 22-mm wrench is too small to fit on a 7/8-inch bolt) so my 7/8-inch wrench does double duty. A 19-mm and a -inch wrench are interchangeable, but a 9/16-incher has no metric equivalent. A few wrench sizes are commonly needed in pairs. And 12-point combination wrenches swing in tighter spaces than six-point wrenches.I also pack 10-inch (extra-wide opening) and 6-inch adjustable wrenches with rubber handles for working on battery terminals.

Adjustable Wrenches