KK Mini Multicopter
It's quite unoriginal as quadcopters go. It has four arms that join at the shoulders and mount motors at their ends. It's designed to bolt together and mount a KK multicopter board.
The parts were printed in PLA; .3 mm layer, 15% infill.
The motors used in this particular build are from Hobby King - "www.hobbyking.com/hobbyking/store/6744AD_100L_Micro_Brushless_Outrunner_1850Kv.html"
ESCs are also from Hobby King - "www.hobbyking.com/hobbyking/store/4318TURNIGY_Plush_6A_8bec_6g_Speed_Controller.html"