Convenient, organized and compact. This 7 piece Hex-Plus (straight and ballpoint drive) long arm key set is a great addition to any pro r/c tool arsenal. Hex-Plus tools have an increased contact surface. Thus, Hex-Plus tools reduce the notching effect inside the socket caused by lower quality, less expensive hex tools. Hex-Plus tools give longer life to socket screws. Designed for long life, ergonimics and easy identification. All keys are marked with its size. 7 hex-plus keys in plastic clip with magnetizer. The following sizes are included: 1.5, 2, 2,5, 3, 4, 5, 6