Micro Gainz 1.25LB Magnetic Weight Attachment for Nuobell 550 & 580 Adjustable Dumbbells Olympic 2 strong N52 neodymium magnets

2 strong N52 neodymium magnets on the back of pin (1

The shoulders have twill tape for improved durability

Made from sintered steel

75LB Dumbbell Plates are

Micro Gainz 1.25LB Magnetic Weight Attachment for Nuobell 550 & 580 Adjustable Dumbbells Olympic 2 strong N52 neodymium magnetsSpecifically designed to magnetize to Nuobell 550 and 580 adjustable dumbbells to add weight Each plate weighs 1. 25lbs and is 9 16" thick Plates have 4 neodymium magnets on back to magnetize to Nuobell dumbbell Plates are powder coated matte black with pressed in logo and weight Made from steel Works on some generic brands of Nuobell style dumbbells Made in USA Patent Pending ***Does not work on the new NUOBELL S 560 and S 5100 Adjustable