Very nice product. Works as advertised and saves a ton of mess and effort.
plugs worked as advertised, saved a mess as I ran into a slight problem, fit well and fast shipping
Worked as described, craftsmanship is top notch, and the email support from John (owner) is outstanding! I needed something to cap the metal brake line while rebuilding brake calipers, I ordered a complete set which made the job much easier! Don't hesitate, you won't be disappointed, these work GREAT!
Makes transporting the toe bars so much easier.
Essential tool now easier to transport
These are just superior in every way! They've been designed by race engineers and tested on race cars for many years..... you will not be a Guinea pig in cheap import experiment.
Great tool - have used an older manual tool but it would only work on 15 in rims or smaller.
This tool is a nice upgrade to an important piece of the whole alignment procedure.
Another trustworthy item from Smart Racing! Easy to install, and with years of racing testing I know it will perform as advertised.
Every carbureted vehicle should have one of these to shut off fuel in case of an accident!
Product was exactly what was needed. My question (current capacity) was promptly answered. Item arrived quickly.
These are great for plugging off brake lines while replacing calipers, or brake lines, & also for, for example, capping off self leveling suspension hydraulic lines on an e28 BMW M5 when converting the car to a standard suspension. It's a great solution!
The customer service at Smart Racing Products is second to none
Quality unit. Came with all the tips to do the job correctly. I like things done as close to perfect as humanly possible. With patience this tool allows me to achieve repeatable results.
I'd call it a C spanner ;-)
Smart design, well made, Excellent service to ship it overseas to me.
Thanks John
The gauge is very accurate, I also like the level function as with the rulers sometimes i find myself not parallel. Good product great company to deal with.
What an awesome tool for Tech!!!
We use it every week to check different classes of cars. Accurate as can be. Digital reading.. this tool is a must have .
Bought one to hold the wheel while checking front suspension. I've had others but they were always cumbersome to use and poorly made.
This item is - beautiful. Good quality materials, design and very easy to use. I am impressed.
Thank you.
Great designed product we use this cooler on many builds that require upgraded cooling.
Such an amazing solution. It stands out among other competitors in that it stays “on” the vehicle. This makes it a clear choice especially if using on a lift to make adjustments then placing the car back on the ground. Customer service was top notch too. Let’s not forget the value of knowledge share and product support. Smart Racing provides both. Ive used this on my R32 (awd) and will use it on my staggered width classic vehicles too.
After an exhaustive search i found this plug and ordered one. Needed it to plug my brake line while I removed the caliper. It worked like a charm. In hindsight i Should have ordered a complete set
An excellent tale told by the man himself. Very nicely printed so many pictures never seen before. Would highly recommend.
Also service from Smart racing was exceptional. Thank you John.
I own a small Porsche repair shop and SmartStrings thing paid for itself the first day.
Great instructions, great customer service, and easy to setup.
And made in the USA! What more can you seriously want?
If this were steel, it would be PERFECT (and would get 6/5 stars)
This would get a 6 star review if it weren’t aluminum so that I could crank down on it with confidence. Make it in steel and I’ll definitely buy more.
Otherwise, I love it.

