3PCS FLEXIBLE EXTENSION BAR SET, 1/4"DR.3/8"DR.1/2"DR
Material: CR-V, chrome-plated finish
Flexible extension bar, can withstand large torque
For manual use, not for pneumatic tools.
1 x 1/4" Drive flexible extension bar set - total length - 150mm 
1 x 3/8" Drive flexible extension bar set - total length - 200mm 
1 x 1/2" Drive flexible extension bar set - total length - 250mm