GearWrench 27 Piece 1/4 Inch Drive Pass-Thru 6 Point Standard SAE/Metric Mechanics Tool Set. Locking flex head handle provides adjustable angles giving greater access. Design allows for 40% more strength than conventional square drive ratchets. Ratchet head is up to 50% slimmer than conventional ratchets. Pass thru ratchet and socket system eliminates the need for deep sockets. Longer length for improved reach and torque. Drive (13mm) GearRatchet Set featuring locking flex handle.