RAM Combination Pin-Lock Security / Key Knob - B Series - 7 pin category-headset Double ball-and-socket technology allows near-infinite

Double ball-and-socket technology allows near-infinite adjustability

Ball size: RAM Snap-Link (3/4")

RAM-B-366U 1" ball with 1/4"-20 camera stud on round plate

iPad mini 3 with case

RAM® Tough-Ball™ base with M8-1

RAM Combination Pin-Lock Security / Key Knob - B Series - 7 pin category-headset Double ball-and-socket technology allows near-infiniteRAP S KNOB3U RAM Pin Lock Security Knob for B Size Socket Arms Features * Keep your devices and mounting system safe from theft and tampering with this 1 4" 20 female threaded security knob * Replaces standard knobs on 1" B size RAM double socket arms * Made of high strength composites and steel for durability and reliability in the most demanding environments * Backed by a lifetime warranty The RAP S KNOB3U consists of a 1 4" 20 female threaded