Length of Torx tip is cut to 1/2 the normal depth.
VIM Tools T50 Half Cut TORX, One Piece Impact Driver, 3/8 Inch Square Drive
VIM Tools T20 Half Cut TORX, One Piece Impact Driver, 3/8 Inch Square Drive
VIM Tools T60 Half Cut TORX, One Piece Impact Driver, 3/8 Inch Square Drive
VIM Tools T55 Half Cut Torx, One-Piece Impact Driver, 3/8 in. Square Drive
VIM Tools T80 TORX One-Piece Impact Driver, 1/2 in. Square Drive, 3 in. OAL
VIM Tools T70 TORX One Piece Impact Driver, 1/2 Inch Square Drive, 3 Inch OAL