15T Servo arm. Adapt 7075 imported aluminum, all-metal CNC carving, high-gloss processing. The distance between the output tooth center toouter bore is 0.98/1.18/1.38 inches, the distance between the two holes at the bottom is 16mm. Including with color gaskets, M3x8 flat head gold screws , M2.5x7 gold screws. product net weight: 10 grams