Didn’t realize I had to pay an additional $200 3 more times to get the rest of the expansion… and if I try get a refund they take 10% from the price you paid… Jesus Christ these people are GREEDY. The power blocks are quality but the shadiness/hidden costs completely offset everything. And idk why they say their customer service is top tier, every time I call it’s an instant voicemail and referral to their email… but alright haha I would never buy these again, and would never recommend it to ANY of my friends. Check Facebook Marketplace for cheaper, more reliable, adjustable dumbbells.