C.K Sure drive adjustable wrench is a wrench with Sure drive jaw profile produced by Carl Kammerling International Ltd. The feature is the Sure drive jaw profile which can grip bolt heads and nuts at the flanks, not at the corners, so as to avoid rounding off.
The Sure Drive adjustable wrench range includes three sizes (200 mm, 250 mm, 300 mm) with a patented jaw profile that grips bolt heads and nuts on the flanks, reducing rounding. The wrenches are made from chrome‑vanadium steel with a matt chrome plating, feature a soft‑grip handle, metric and imperial graduations, and a lightweight, narrow‑jaw design for better access.
Technical details provide recommended nut/bolt head sizes, dimensional measurements, packaging specifications, and a lifetime warranty against material or workmanship defects. The tools are manufactured in Taiwan and are not subject to RoHS or WEEE regulations.
| Jaw profile | Sure drive jaw profile that grips bolt heads and nuts at the flanks |
|---|---|
| Jaw opening increase | 18% wider than standard pattern |
| Material | Chrome vanadium steel, matt chrome plated |
| Handle | Soft grip handle for comfort and grip |
| Net weight (200 mm) | 207 g |
| Net weight (250 mm) | 388 g |
| Net weight (300 mm) | 599 g |
C.K tools are guaranteed for life against imperfect materials or workmanship, but damage caused by inappropriate use is not covered.
No, the products do not fall within the scope of RoHS or WEEE regulations.
The recommended bolt head size for the 250 mm wrench is 10 inches.
They are made in Taiwan.