Only for Bowflex 560 dumbbells. You need a total of eight (included) to attach both bases to the stand.
Bumpers Screws Hardware for Bowflex 560 Dumbbells for Media Rack Stand
Marine Pair 316SS Heavy Duty Bimini Top Cap External Eye End Boat Fittings with Two Screws Hardware Fits 7/8" or 1" OD Round Tube
Eisenlink longer screws, 2pieces for Square Dumbbells, up to160lbs (Single Dumbbell)
8-Pack Front Leg Screws - Replacement for Concept 2 Rowing Machines - 8 Pack
T-Zone Vibration Medical Technologies VT-15 - Screws Bolts for Railing/Post s(2)