Length of Torx tip is cut to 1/2 the normal depth.
VIM Tools T40 TORX Driver 8 Inch OAL, 3/8 Inch Square Drive Holder
VIM Tools T40 TORX, Gun Metal Gray Bit, Satin Chrome 3/8 Inch Square Drive Bit H
VIM Tools T60 Half Cut TORX, One Piece Impact Driver, 3/8 Inch Square Drive
VIM Tools T30 Half Cut TORX, One Piece Impact Driver, 3/8 Inch Square Drive
VIM Tools T50 Half Cut TORX, One Piece Impact Driver, 3/8 Inch Square Drive