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

So far so good with this multiplier. Like other reviews it's about 3.5 multiplier as tested. I'm a bus mechanic and have used it quite a few times already and it works well.

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 knowBasically, 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.

Worked great.

Powerful, precise, and built tough! Saves time and effort on heavy-duty jobs

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 160At 165- click, no movement of lugs. Lugs torqued higher than 165At 170- click, no movement of lugs. Lugs torqued higher than 170At 175- lugs moved before click. So the torque of the lugs is between 170 and 175This 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.

Works perfectly, save me a lot of time

Compact size gets into tight areas on our tree grinding wheel to torque 1" bolts properly. Definitely helped bring down our maintenance cost now that the bolts are tight enough. Though still a work out it's easier than a 6 foot cheater pipe on a breaker bar when you have to torque 60 1" bolts!Update: after a year & 4 months I broke it, torqued a lot 1” bolts to 800 fp. It broke the 4 planetary gears. Emailed nieko to get some replacement gears & they don’t sell them. Instead the warranted the whole tool for no cost to me! Excellent customer service!

This will be an awesome addition to .you shop. Looks tough and has a good amount of weight for a longlife. Clean unit with awesome carrying case