Adjustable Wrench GEKO 12" (300 mm) – 40 mm Jaw Capacity, PROFI

The GEKO Adjustable Wrench 12" (300 mm) – 40 mm Jaw Capacity, PROFI is a professional hand tool designed to grip, turn and tighten a wide range of nuts and bolts. With a maximum jaw opening of 40 mm and a solid 300 mm length, this adjustable wrench replaces multiple fixed-size spanners and is intended for repetitive use in workshops, maintenance and plumbing environments. Its construction emphasizes durability and accurate jaw adjustment to maintain firm contact with fasteners during common mechanical tasks.

Advantages

The PROFI model provides a single versatile tool that covers many sizes, reducing the need to carry a full set of fixed wrenches. The adjustable mechanism allows for quick size changes and precise clamping force, while the longer 300 mm handle increases leverage for tighter turns. Durable materials and a machined jaw profile help resist wear and minimize slippage on hexagonal fasteners, extending service life under regular professional use.

Suitable for

• General workshop maintenance and repairs
• Automotive and bicycle maintenance where variable-size fasteners are present
• Plumbing tasks involving pipe fittings and nuts
• On-site service and installation work requiring a compact, multi-size wrench

Key specifications

• Overall length: 300 mm (12 inches)
• Maximum jaw capacity: 40 mm
• Handle type: solid metal handle for increased leverage
• Adjusting mechanism: screw-driven worm gear for precise jaw positioning
• Jaw profile: machined contact surfaces for reduced slippage

How to use

Select the wrench and open the jaw using the worm gear adjustment screw until the jaw fits snugly around the nut or bolt. Position the wrench so that the fixed jaw bears the load and apply steady turning force through the handle. Readjust the jaw if necessary to maintain firm contact and avoid rounded fasteners. After use, wipe the tool clean and store it in a dry place to prevent corrosion.

Usage recommendations

Use the GEKO adjustable wrench within its specified jaw capacity; avoid using excessive force or applying cheater bars which can damage the handle or jaw mechanism. For round or damaged fasteners, consider using alternative gripping tools designed for stripped heads. Regular inspection and occasional lubrication of the worm gear will help maintain smooth adjustment and prolong tool life.