- Outside square Drive 25 = 1″ – Inside square (Robertson) drive 20 = 3⁄4″
- With borehole for locking pin or safety spring and grove for O-ring
- Surface: phosphatized, oiled
- Made in Germany
- Drive: Square, hollow 20 mm (3/4 inch)
- Output: Square, solid 25 mm (1 inch)
- Dimensions: 65 mm
- Net weight: 0.48 kg