Do not dp the Sams club wal mart made in China garbage, you will not be happy.
POWERBLOCKS ROCK!
I have been training since 1982 sista trust me on the equipment.
Cheers
Go with POWERBLOCK brand they are excellent quality and feel great not loose or cheap.
Made in the USA, I have a set over a decade old and in very good condition still, and I use them...LOL