Build for powerful biceps with the Marcy(R) Curl Bar. Threaded collar system is the quick and easy way to secure barbell plates for safe problem free lifts. The solid steel curl bar is cambered to prevent uncomfortable and sometimes painful stress to wrists and forearms. Attractive and durable chrome bar is designed to accommodate all standard plates with 1" diameter holes so you can add additional weight as your strength increases. Product Features 1 48" solid steel threaded curl bar 2 Threaded chrome collars Accommodate all standard plates with 1" diameter holes Additional Details 2-year limited manufacturer's warranty