Excellent item at an excellent price! Using this to mount a 27” Mid 2010 iMac and a 27” Cinema Display screen and have to say, that it is perfect in every way.
Installation is a 2 man job, after trying as a one man exercise, it is much easier with another set of hands!
Providing you use the correct drill bits, the 5 holes are straight forward - Assembling the support column is where the benefit of the additional person helps, but once you’ve lined up the bolts, you’re good to go, and once tightened, the monitors can be mounted - and again, the extra help is beneficial in adjusting to the required position. Once tightened in position you’ll feel the benefit of extra desk space and reduced neck fatigue.
If you’re contemplating investing in this kit, I’d certainly have no hesitation in recommending.
Once I got over the shock that I had to drill 5 holes in my desk to mount the main column, I got on with the job. Good sturdy and solid parts that fit together well and lots of adjustable bolts that enables you to get your monitor screen and lap top exactly where you want them without cluttering up your desk. Well worth the high price.