Product review (5 stars): You'll need a metric nut driver & other tools!
To avoid that extra trip to the hardware store:
For my range you need a 7mm nut driver (NOT supplied), another review mentions 5mm.  1/4" and 5/16" drivers are too small and too large.  My range needed a 3/16" ratchet socket (1/4" socket set should have it) for the burner screws, a nut driver might do.
Screwdrivers including about a 1/8" straight blade that fits in a small tube (not flared out near the tip, can grind one down) for the burner idle adjustments (pull the control knobs off & look down the hollow shafts).
I have a gas manifold pressure gauge and will use it, probably not needed.  Just follow directions to convert the regulator, typically by unscrewing and flipping a piece over.
A flashlight, piece of baling wire, tape, inspection mirror and fine needle-nose pliers might come in handy to recover a dropped orifice.
Please see other reviews for more details; I particularly liked the tips in K. Ferrara's review.