This is the replacement SERVO GEAR SET for Hi-Tec's HS-205BB servos. PACKAGE

INCLUDES: 4-Gears (white plastic) 1-Clip (white plastic)

SPECS: 3- Outside Diameter: 10mm 1- Outside Diameter: 13mm (long shaft) 6-13-94sk  

BOX DIMENSIONS: 2.25" W. X .63" H. X 3.00" L. BOX WEIGHT: .01 LBS.