The Allen 56660G 8 Pc. Metric Ball-Plus T-Thru Handle Set includes the following sizes: 2, 2.5, 3, 4, 5, 6, 8, 10.
From Allen, the original manufacturer of the hex key
Dual material T-handle provides superior strength and ultimate comfort for extra torque and safety
T-thru handle design has a long arm with ball end for access and a standard hex short arm for high torque
Ball-Plus hex permits an entry angle up to 25° to work in hard-to-reach areas
Heat treated, tempered alloy steel provides high strength and resistance to rotational distortion