Technical Information: Outside square Drive 10 = 3⁄8″ – Inside square (Robertson)
drive 12.5 = 1⁄2″
With locking ball
Surface: chrome-plated
DIN 3123, ISO 3316
Made in Germany
Drive: Square, hollow 12.5 mm (1/2 inch)
Output: Square, solid 10 mm (3/8 inch)
Dimensions / length: 36 mm
Net weight: 0.06 kg