RAM 2" to 2.5" Rail Clamp Base with D Size 2.25" Ball - RAM-D-271U-2

The RAM-D-271U-2, round pipe base, consists of a 2.25" rubber ball connected that will connect to a pipe tubing diameter from 2" to 2.5" in diameter. Specs & Features Clamp Dimensions:2" to 2.5"Material: Powder Coated Marine Grade AluminumBall Size: 2.25" Rubber "D" Ball Size Note: The "U" in the part number reflects product packaged in poly bag. Weight:1.22 lbs. Compatible With Compatible Arms and Mounts RAM Medium Length Double Socket Arm for D Size 2.25" Balls - RAM-D-201U RAM Double Socket Arm With Jam Nut For D Size 2.25" Balls - RAM-D-201U-MI1 RAM Short Length Double Socket Arm for D Size 2.25" Balls - RAM-D-201U-C RAM Short Double Socket Arm With Jam Nut For D Size 2.25" Balls - RAM-D-201U-C-MI1 RAM Long Length Double Socket Arm For D Size 2.25" Balls - RAM-D-201U-E RAM Double Socket Arm With RAM® Pin-Lock™ Security Nut And Key Knob For D Size 2.25" Balls - RAM-D-201-SU RAM HORZ. SWING ARM SYSTEM W/O BALL BASE - RAM-D-162H-MC3 RAM Vertical Mounting Base With Single Socket D Size 2.25" Swing Arm - RAM-D-162V-MC3 RAM Horizontal Mounting Base With Single Swing Arm And D Size 2.25" Ball Socket - RAM-D-109HS-4U