Replaces existing 1 3/8" sockets | M20 threading provides wobble-free connection between the subwoofer and compatible speaker poles | Includes four mounting screws

Adjustable. Main holder adjusts in height and width to securely grasp a wide range of touch-screen tablet computers and e-readers in portrait or landscape orientation. | Versatile. Can be clamped to round or square tubing, clamped to a desk or tabletop, threaded onto a mic stand, or used like an easel-style tripod stand by placing it on any flat surface. | Protective. Nonslip padding on the contact points protects electronic devices from scratches and provides extra traction to ensure safe, reliable, stable support. | Ergonomic. 180 degrees of tilt and 360 degrees of rotation enable precise positioning of tablets for ease of viewing, reading, browsing, game playing, and video conferencing. | Convenient. Additional smaller device holder adjusts in length to securely hold a variety of power banks and external batteries as well as smartphones and phablets.