Folding and Locking Hex Key Set Push-button locking feature that locks in 3 positions at 90 degree, 135 degree and 180 degree; durable and ergonomic construction with steel side plate for torque (up to 600 in lbs); soft rubber grip; includes 8 important sizes: 1 5, 2, 2 5, 3, 4, 5, 6 and 8mm