Body Solid Standard Barbell Spring Collars - RC0616 Heavy-duty spring steel squeeze-on collar with comfortable black plastic sleeves. Perfect fit on all standard bars. DIMENSIONS Assembled Dimensions: Length: 3.75in / 95.25mm Width: 3.00in / 76.20mm Height: 1.00in/25.40mm Package Dimensions: Length: 6.69in / 169.93mm Width: 0.98in / 24.89mm Height: 6.89in / 175.01mm Volume: 0.03 ft3 / 0.00 m3 OPTIONS RB47RB47 Standard Curl Bar (Chrome) The quickest way to increase upper arm mass, strength and definition, this bar isolates and intensifies development of the bicep and forearm muscles RB84RB84 7' Standard Bar (Chrome) This solid cold rolled steel bar is 7 feet by 1 inch. A full 51 inches between inside collars ensures accurate fit SDA14SDA14 Standard Dumbbell Handles Drop-forged from one piece of solid steel RB47RB47 Standard Curl Bar (Chrome) The quickest way to increase upper arm mass, strength and definition, this bar isolates and intensifies development of the bicep and forearm muscles SDA14SDA14 Standard Dumbbell Handles Drop-forged from one piece of solid steel RB84RB84 7' Standard Bar (Chrome) This solid cold rolled steel bar is 7 feet by 1 inch. A full 51 inches between inside collars ensures accurate fit