This Y-Not Robots² 6780 base will mount to existing Tetrix channel hole patterns, and is made to fit the ZTE Speed phone for the upcoming FTC season. Mate with the matching cover (http://www.thingiverse.com/thing:999616) for a secure option of mounting your control device. Cover mounting holes aren't threaded, but are sized pretty close to self-tap using existing Tetrix bolts/screws. Features: • No support needed for printing • Hole pattern matches Tetrix • Incorporated cutouts allow for access of phone functions/charging **Edited for better fit, 10-28-15; alignment/spacer tabs were added to tighten up the phone within the mount.Rafts: NoSupports: NoWe've played with a few different options, but 25% seems to be the best option for robustness vs print time. Your mileage may vary.