Compound Balanced Mesh Belt with welded edge means the left and right spirals are fitted tightly together alternately and jointed with straight rods. If using 4 rods for one spiral to joint, we call it A4.
DS929MG is a mini digital rc servo. The light weight 9g and small shape are the main reasons of hot sale in this market. Its size is 22.5X11.5X24.6mm (0.88"x0.45"x0.96"), which is absolutely a mini servo.