SP20MM4P | Arkon 20mm Non-Coated Ball to 4-Prong Adapter

SP20MM4P is a versatile adapter that allows you to mount 4-prong iGRIP holders onto pedestals accommodating the 20mm ball pattern (sold separately). This includes only the 20mm Swivel Ball to 4-Prong iGRIP Pattern Adapter. (Mounts, holders, and devices sold separately.) Secure the SP20MM4P adapter onto any pedestal accommodating the 20mm ball pattern to make them iGRIP-compatible, including Arkon’s Heavy-Duty Multi-Angle Drill-Base Mounting Pedestal with 8” Adjustable Arm (HD006), Heavy-Duty Clamp Mounting Pedestal with 10” Adjustable Arm (HD004), or Heavy-Duty Seat Rail Mounting Pedestal with 22” Adjustable Arm (HD001).