The RAM-D-235U consists of a double u-bolt base with 2.25" diameter ball and two stainless steel u-bolts. The double u-bolt base will accommodate rails from 1" to 1.25" in diameter.
RAM® Double Socket Arm
RAM® Horizontal Swivel Mount with Socket Arm
RAM® Double Socket Arm with Jam Nut
RAM® Double Socket Arm with RAM® Pin-Lock™ Security Nut
RAM® Vertical Swivel Mount with Socket Arm
RAM® Horizontal Swing Arm Mount with Single Socket Arm
RAM® Stainless Steel U-Bolt Hardware Pack for Rails 1" to 1.25"