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Tool Review: Mac Tools cordless 3/8-inch wrench

The 3/8-inch-drive Mac Tools cordless wrench is relatively compact, at 7.1 inches tall by 6.7 inches long and a mere 2.5 inches wide.
<p>The 3/8-inch-drive Mac Tools cordless wrench is relatively compact, at 7.1 inches tall by 6.7 inches long and a mere 2.5 inches wide.</p>

NOTE: The review article for the Mac Tools BWP038 in the January/February 2014 issue, we inadvertently listed the wrong breakaway torque value. The BWP038 3/8-inch drive tool provides 150 ft.-lbs. of breakaway torque. The 1/2-inch-drive version offers 725 ft.-lbs. of breakaway torque. This revised article lists the correct specification.

The range of high-quality cordless electric power tools is quickly expanding. Torque and battery life is increasing, and the toughness and durability demanded by pro technicians is increasingly being met. To provide insight into a new offering, here we’ll review one of the latest Mac Tools cordless impact wrenches.

The Mac Tools BWP038-S2 kit includes the BWP038 a 3/8-inch-drive cordless impact wrench, a pair of MB120 12V Max rechargeable lithium ion batteries, an MCB101 battery charger and an MTB001 tool bag.

The wrench is extremely well-balanced and feels great in your hand. The handy forward/reverse button is easily operated with the fore-finger or thumb without the need to re-position the wrench in your hand. The body is made of glass-filled nylon for toughness and chemical resistance, and the grip’s coating is oh-so-comfy.

Since this impact wrench is just hands-down-pretty with its ergonomic design and eye-catching red/black/silver color scheme, I really had to force myself to abuse this little tough guy. With a whopping 150 ft.-lbs. of available grunt and its nifty compact size, it’s definitely a workhorse and ideal when you don’t wish to (or can’t) drag an air hose around. But it’s so darned curvy and cute, I felt that it would break my heart to intentionally scratch it or get it dirty. In the end, I sucked it up and put it through its paces, intentionally dropping it onto my shop’s concrete floor several times from heights of two to six feet. The thick-skinned little bugger just kept on tickin’ and never missed a beat. Naturally, if you whack any exposed battery pack around hard enough, you’re eventually going to break it, but during my on and off testing over a period of almost a week, she never argued with me and just kept on slammin’ (even though on two of the drops, the battery pack popped off, but after snapping it back on, she kept operating like new). For any cordless tool, that’s a good enough proof of durability to suit me. NOTE: After testing, I carefully wiped her clean and felt like I needed to apologize before slipping the wrench into its storage bag.

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