I purchased this mostly because of one popular reviewers remarks in his personal review of this very same vise in regards to this particular Vise's weight which is roughly 17 pounds/7.71 kg. I haven't yet to torque the vise down with all of my strength which is quite a bit. I'm no strongman nor am I even remotely close to the strength of those guys you see in the World's Strongest Man Competition though I have torqued down the jaws of this here Vise quite a bit in my roughly three months of having had and used this vise. So far it has been reliable to say the least. As far as opening and closing the jaws is rather smooth with no sort of grinding or metal on metal feel to it. It does have some sharp slash rough edges go it that will definitely need some sanding or grinding down as to make it most safe for it's use in your shop, office, or whichever space you've got that is available. After I sanded, filed, and even dremeling the rough edges I just say that it looks terrific. After having done that I feel most safe when our little boys play with Daddy's vise lols cause it was rather sharp at it's unfinished edges. So all in all is this vise worth purchasing? I'd give it two thumbs and maybe a pinkie toe or two lols. No seriously this is a really great vice at an affordable price. As far as extra heavy industrial use I can not speak to though for most normal case use I'd say yeppers go and get it. Also it should be noted that YOU should check the product weight in the description when looking at things to purchase most especially Vise's cause like I said before this vise is quite literally double the weight of other Vise's in this price and category. The weight alone speaks volumes. I know I'm glad I got this as I've used it nearly everyday since the day it arrived!!!