Size: 
<br />#1: 21T 11181 Motor Gear
<br />#2: 64T 11184 Main Gear
<br />Material: Metal
<br />Clolor: As the pictures shown
<br />Fit for HSP 94103(PRO), 94107(PRO), 94111(PRO), 94123(PRO), 94170(PRO)
<br />Package Included: 1 pc