Wrench (open-ring) 18 mm Topex 35D390

The Topex 35D390 is an 18 mm open-ring (combination) wrench designed for tightening and loosening hexagonal nuts and bolts. One end features an open jaw for quick engagement and rapid turning, while the opposite end has a ring (box) head that provides a full-contact fit for higher torque and reduced slip. Compact and single-size, this hand tool is intended for mechanical, automotive and household repair tasks where a precise 18 mm fit is required.

Advantages

The combination of an open jaw and a ring head offers versatility in confined and open spaces, allowing both fast operation and secure fastening. The fixed 18 mm profile ensures consistent contact with fasteners to minimise rounding. The tool’s compact length supports use in tighter work areas and contributes to easy storage in toolboxes or on a rack.

Suitable for

• Tightening and loosening 18 mm hexagonal nuts and bolts
• Automotive maintenance and repairs
• Mechanical assemblies and equipment servicing
• General household repair and DIY tasks

Key specifications

• Type: open-ring (combination) wrench
• Size: 18 mm working profile
• Ends: open jaw on one side, ring (box) head on the other
• Application: manual hand tool for fastening and unfastening hex fasteners
• Design: single-size, compact form factor for access in confined spaces

How to use

Select the 18 mm wrench when the nut or bolt head corresponds to that size. Use the open jaw end for quick turns or when access is limited, placing the wrench so the load is applied toward the fixed stop to reduce slippage. Use the ring head for full-contact engagement when higher torque is required; ensure the ring fully encloses the fastener before applying force. Apply steady, controlled force and avoid sudden impacts to preserve the tool profile and the fastener edges.

Usage recommendations

Inspect the wrench before use for wear or deformation. Keep the contact faces clean and free of grease to reduce slippage. For high-torque applications, use the ring head and apply force gradually; avoid using extension bars or cheater pipes unless the tool is rated for such loading. Store the wrench in a dry place to prevent corrosion and maintain accurate fit.

Topex 35D390, 18 mm open-ring wrench, provides a practical single-size solution for tasks requiring a reliable fit and balanced access options between open-jaw speed and ring-head security.