RAM® Double Ball Drill-Down Mount with Diamond Plate - Short – RAM Mounts
Amazon.com: iBOLT Triple 25mm / 1 inch to 25mm / 1 inch - Three Metal Ball Joint Extension Adapter for Industry Standard Dual Ball Socket mounting arms : Cell Phones & Accessories
RAM® Triple Ball Adapter - C Size – RAM Mounts
Amazon.com: RAM MOUNTS (RAM-B-289U Triple 1" Ball Base : Electronics
RAM® Twist-Lock™ Triple Suction Mount with 1/4"-20 Stud – RAM Mounts
Triple 25mm / 1 Inch To 25mm - Three Metal Ball Joint Extension Adapter For Industry Standard Dual Ball Socket Mounting Arms - Sports & Action Video Cameras Accessories - AliExpress