One Pair of Adjustable Dumbbells Chrome Plated Metal Total 105 Lbs (2 X 52.5 Lbs) with Trays High quality cast iron adjustable weight dumbbell set (finish in black painted or Chrome coated) Single pc dumbbell kit: 52.5 lbs and 100lbs dumbbell set (finish in black painted or Chrome coated) Double pcs dumbbell kit: 105 lbs (2pcs x 52.5lbs) and 200 lbs (2pcs x 100 lbs) dumbbell set (finish in black painted or Chrome coated) Collars and handles are threaded for a secure fit; Plates are made from durable cast iron