Most of what we sell for service trucks has a magnet in it. A grease gun holster, a pry bar holder, a spray can rack: stick it to the inside of a compartment door and it stays there, and it comes off clean when you trade the truck. That works on one condition.

Steel bodies

A steel service body, which is most of the older ones, is a magnet's best friend. Inside the compartment doors, the vertical walls between compartments and the underside of the lid are all fair game. The strongest hold is on flat, painted steel; a heavily textured bedliner cuts the grip because the magnet is not sitting flat. If you are mounting on bedliner, pick a spot with the thinnest coating or scrape a magnet-sized patch.

Aluminum bodies

Aluminum does not attract a magnet, full stop. Newer bodies and a lot of the crane and mechanic bodies are aluminum, and every year someone orders a magnetic holder and finds out in the driveway. That is why we make a separate line of holders for aluminum service bodies: same shapes, but they bolt or clip on with two screws instead of a magnet. Marker holders, punch holders, zip tie holders, grease tube holders, Loctite holders and heel bar holders, all in that line.

How much weight

A single holder is meant for the tool it is named for. A grease gun holster holds a loaded grease gun. A pry bar holder holds a pry bar. Down a gravel road at 55 the bouncing is what dislodges things, not the static weight, so we size the magnets for that and use more of them on the heavier items. If you want to hang something we did not design for, put it on a horizontal surface first and see how it behaves before trusting it on a door.

Where to start

The service truck starter kit is the eight or so holders every body ends up needing, and any three together take 10 percent off. Everything in it is printed on our own farm in Minnesota and ships in 2 business days.