I bought this from the Langley Fitness Depot on 16-10-12. I have a Amstaff bench/squat machine and it doesn't have a safety rack. I did some measuring and sure enough it would fit. I got it home and put it together. I did have to drill a couple of extra holes to make it fit. It's now a necessity for my workouts. It looks and works great. I do recommend this product.
Note: If you don't have a Northern Lights Product to mount this to, make sure you do some measuring.