The RAM-D-271U-12, round pipe base, consists of a 2.25" rubber ball connected that will connect to a pipe tubing diameter from 1.25" to 1.875" in diameter. Weight Capacity: 6 lbs. (Standard use) / 5 lbs. (Heavy-Duty use).
Includes: (2) 1/4"-20 x 1.5" Screws, (2) 1/4"-20 Nylock Nuts, (2) Rubber Caps
Clamp Range: 1.25" - 1.875" diameter
Ball/Socket Size: D (2.25")
Weight Capacity: 6 lbs. (Standard) / 5 lbs. (Heavy-Duty)
Material: Marine-grade aluminum