please connect to 1-4ch of KR-420XT

Built-in weight metal with firing parts to achieve recoil

father's day

but not included

5t spec racing

KO PROPO - RSx4S-one10X Servo with 4 Selectors Batteries Alkaline please connect to 1-4ch ofFeatures: The hard alumite aluminum gear Coreless motor Dual ball bearings The hard servo gear shaft The aluminum heat sink middle case Black cable Gold plated connector Serial Compatible HCS Compatible Specifications: Torque: 12. 5Kg cm Speed: 0. 09sec 60deg(@7. 4V) Torque: 11. 8Kg cm Speed: 0. 10sec 60deg(@6. 0V) Dimensions: 40. 5x26x21mm (Low Profile) Weight: 50. 5g Operating voltage: 6. 0~7. 4V (Lipo,Life,Ni MH)