Is this set worth it over adjustable dumbbells?

If you train with several people or change weights often, fixed pairs are faster and have no dial or pin to fail. Adjustables save space and cost less per pound but are slower to switch and top out lower in feel.

How much floor space does the rack need?

The rack footprint is about 22.5 by 19.5 inches and stands 61.5 inches tall. Leave clearance in front for pulling dumbbells out and a wall anchor or stable base behind it.

Do the dumbbells fit the rack only?

The rack is built for 5 to 50 lb hex dumbbells in 5 lb increments, which is exactly what the set contains. Other brands' hex heads may fit if their handle length and head size match.

What does the 3% weight tolerance mean?

Each dumbbell can be up to 3% off its marked weight. On a 50 lb dumbbell that is about 1.5 lb, which matters little for most training but is worth knowing for strict progression tracking.

Two dumbbells at each weight from 5 to 50 lb, twenty in total, plus the PL7384 vertical rack. A bench is not included.

Can I use these on a garage floor or hardwood?

The rubber heads are gentler than bare metal and resist rolling, but dropping them is not advised. Use mats on hardwood and check the floor rating for loaded rack placement.