Masterforce Half-Inch Impact Driver

The Masterforce impact driver is a must-have trailering tool.

When my trailer tire blew along the highway, it took a man on either side of the tire tool to break the lug nuts loose. A buddy suggested this 18-volt electric driver. It generates over 100 foot-pounds of torque and up to 3,200 impacts per minute. The battery charge was strong enough to break and retighten 24 lug nuts with power to spare. A 3/8-inch adapter and 1/4-inch collet add versatility to this must-have trailering tool. $220 with lithium battery and charger;