Dimemsion (mm) weight(g) 4. 8v 6. 0v 7. 4v 8. 4v gear bearing case speed: sec/60 torque: kg/oz-in speed: sec/60 torque: kg/oz-in speed: sec/60 torque: kg/oz-in speed: sec/60 torque: kg/oz-in 40. 7*20. 0*37. 0 59 0. 17 4/55. 5 0. 15 6/83. 3 n/a n/a n/a n/a metal 2bb plastic (sav-sc0253mg)