Was this a kit, or did you custom build this?
The workbench I got at Sam's Club a number of years ago. It came with the hardwood maple top.
I covered the top with T6160 1/2" aluminum. Over the years I have tried using plywood and even lexan to cover the hardwood. I am very hard on a workbench surface; I can ruin just about any type of material.
I made the bracket for the hose reel which weighs about 50 lbs from the same aluminum. I used 3/8" stainless steel on the front of the workbench legs where the aluminum was bolted for extra support. All nuts and bolts are grade 8.