Tajima Heavy-Duty Double-Ended Hex Socket, 17 x 21mm, made in Japan.
• A 5x more durable design (compared to the company's standard socket) with an RH structure that absorbs impact.
• A torsion effect absorbs twisting force on the shank.
• A damper effect reduces bending stress applied to the shank.
• A double-ended socket that covers two sizes in one tool.
