- PRO 03715B 1/2" Drive Torque Wrench, 1100 Foot-Pound Heavy Duty Torque Multiplier Wrench, Cr-Mo and Chrome-Vanadium

I bought the Neiko 03716B torque multiplier to help with frozen heavy-duty lug bolts that my impact gun couldn’t budge — and it delivered. Right out of the box, the tool feels heavy and solid. It’s not flashy, but the build quality is strong. Using it was pretty straightforward and It took way less effort than I expected to loosen bolts that had probably been frozen in place for years. The size is just right — compact enough to fit under a truck or around tight wheel wells, but powerful enough to do the job and the carrying case is a nice touch. If you’re doing heavy work and tired of fighting with over-torqued or rusted bolts, this is worth the investment. It’s not something I use every day, but when I need it, I’m glad I have it.

Works great, but make sure you read the instructions and use it accordingly to rotation. You could easily go the wrong direction and over torque a bolt/nut instead of removing it and when tightening make sure you calculate the torque wrench accordingly.

First, for higher torque fasteners, over perhaps 200ft-lb, this is a great tool to have and reasonably affordable. As long as there is something for the reaction arm to rest on and room for the rather large tool head, the Neiko torque multiplier makes torque application much less of a strain particularly for one's back in awkward positions. And you really don't want to strain your back. Next, there are complaints about the tool having 3:1 laser etched ratio when the mechanical ratio is 3.3:1. So I did a quick empirical test because, yes, I don't want to substantially over torque fasteners: -- first verified the tool is 3.3:1 (1/2 wrench in one side, get about 3.3 turns for one turn of 3/4 side) -- next torque a couple of wheel lugs using tool, with 55ft-lb input (good quality CDI torque wrench) -- then removed torque multiplier, and adjust CDI torque wrench starting at 160ft-lb in 5ft-lb increments until I passed the lug nut torque that was applied with the torque multiplier. At 160- click, no movement of lugs. Lugs torqued higher than 160 At 165- click, no movement of lugs. Lugs torqued higher than 165 At 170- click, no movement of lugs. Lugs torqued higher than 170 At 175- lugs moved before click. So the torque of the lugs is between 170 and 175 This gives a torque ratio for this particular Neiko tool of about 3.1:1. The above is very empirical, no special calibrations were used. Using 3:1 is probably OK, perhaps adjust the input a tad low, or round down when calculating the torque wrench setting, or just figure that the fastener torque is not that critical and 3-5% won't matter due to other tolerances (torque wrench, dirt, fastener metallurgy, how much Wheaties was eaten for breakfast, ...). I like the tool, now those 300ft-lb strut bolts or 450ft-lb pinion nut pre-loads won't be quite so much effort.

I bought this to break loose rusty bolts when doing a brake job, and WOW did this make it so much easier. It is rather large, so at one point I had to use a 12" extension (and once, a u-joint) and it still popped those bolts like nothing. For reference, the rear caliper carrier bolts on a VW Golf after 13 years (half of them in salty michigan winters). My biggest gripe is that the output is 3/4", which means using a downsize adapter, which adds to the already large size of this thing and reduces it's utility for me.

Who needs an expensive cordless impact gun when you can buy this tool instead. It has a 3.5:1 gear ratio and doesn't require expensive batteries to operate. Once you figure in gear slop & friction loss the multiplier is really a 3:1 multiplier just so you know Basically, you put your 1/2" drive ratchet on one side and a 3/4" drive 6-point impact socket on the other end and proceed to break loose bolts torqued to over 400+ ft-lb with only a little over a 115ft-lb of torque on your 1/2" drive ratchet. This is what you call working smart via planetary gearing. With planetary gearing remember that the torque multiplier bar will move in the opposite direction you are turning your ratchet in. If you're rotating a tire that is using planetary gearing the wheel on the opposite side will rotate in the opposite direction. We used this tool to break bolts loose on our Allis Chalmers 7045 tractor that our Tekton 42" 3/4" drive break bar couldn't safely break loose even with a cheater/extension pipe on the end of it. This torque multiplier broke the bolts loose like it wasn't even breaking a sweat! It is a little scary when you first use it because the bolts make a loud pop when breaking them loose and you instinctively think that the bolt has snapped off in the hole creating an even bigger problem but luckily for us that wasn't the case! This is a must have tool in your shop especially if your working on large equipment! Just make sure you have a nice heavy walled pipe to go with it to brace the torque multiplier bar with.

Very helpfull when it comes to breaking wheel nuts loose on larger loaders like a Komatsu WA600. Nice case, I watched several videos about people complaining about the ratio, if you want to have a accurate tool, go buy the top $ tool, but for a field mechanic I think it's great.

This tool is great. I didn’t even know this existed until I needed one. Good luck properly torquing a bolt to 300+ pounds without it.

So far so good

Hace su trabajo funciona bien y de buen material

Durable

No manual, spair O ring is for the 3/4 input to 1’’ output and the red box is big, hard to rotate. I opened the tool and apply grease to the gears inside…

Very good

Brilliant value for a really well made product. Just laughed at my 1,100 N/M hub nut that had defied my trusty 3/4" square T bar & 2metres of tubing, my cheap & nasty 3/4 drive torque wrench in reverse etc. Hardly surprising when this compact tool will handle a torque nearly 5 times greater!