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The RAP-B-102-231ZU is a marine grade aluminum handlebar/rail base with a ZINC u-bolt (fits rail diameter .5 to 1.25 inches), COMPOSITE standard sized length arm and diamond adapter plate. This mount DOES NOT INCLUDE a cradle or holder. 

• Warranty: Manufacturer's, RAM Mounts (National Products Inc.), Limited Life Time Warranty.
• Click on individual links to view more information.
• Included Base: RAM-B-231ZU black powder coated marine grade aluminum handlebar/rail base with 1 inch diameter rubber ball.
  • Fits rail diameter from .5 to 1.25 inches.
  • Includes 1 inch zinc u-bolt that fits rail diameter from .75 to 1 inch.
  • Includes 1 inch zinc u-bolt that fits rail diameter to 1.25 inches.
  • Includes two nuts, u-bolt plastic caps and the RAP-319 composite reducer that allows a rail diameter down to .5 inch when used with the 1 inch zinc u-bolt.
• Included Arm: RAP-B-201U composite standard sized length arm for 1 inch balls.
  • Measures 3.0 inches between socket centers.
  • Measures 3.6875 inches in overall total length.
  • The arm allows for easy adjustment by loosening the plastic side knob, a single spring inside the arm opens the sockets, allowing the arm to pivot on the attached base accessory. This enables the arm and accessories to be positioned at various angles allowing the ultimate in position flexibility. Loosen the knob completely and the arm will disconnect from the accessories.
• Included Adapter: RAP-B-238U composite universal diamond plate with attached 1 inch diameter rubber ball.
  • Two holes measuring 1.9 inches from center hole to center hole.
  • Compatible with AMPS hole pattern. The adapter will connect to RAM cradles (RAM-HOL-xxxx series) and third party cradles with the AMPS hole pattern.