Our Troy Pro-Style Dumbbellsare all professionally pre-assembled by us to ensure that they meet the standards required in heavy use, commercial applications. All dumbbells utilize bigger, steel alloy bolts that are longer and stronger than the competition. Troy Pro-Style Dumbbells featured here consist of 27MM straight handles with special, deep set knurling for functional performance and Troy premium grade, black textured, machined plates. The steel, chrome end caps include the TROY name and numbers tags for easy ID. Available in 2.5LB increments starting at 5LBS up to 52.5LBS and in 5LB increments up to 150LBS.