又看了一下冰钻的解释,说是最新科技,New high torque 2 H.P,可以用8‘, 9’,10‘三种钻头,应该没有问题。9 N. b2 T" ?8 p) u
# E8 k+ K+ [& C3 J& Z e3 @* jNew HTT transmission with a heavy duty clutch for fast, solid engagements that transfers engine energy for additional torque. J. E- \+ \7 _