Combination Slimline 7 mm wrench Proxxon PR23907 — flat box-open design

The Proxxon Combination Slimline 7 mm wrench PR23907 is a low-profile hand tool designed for precise mechanical and maintenance work where space is limited. It combines a flat open-end and a recessed box (ring) end in a slimline body that fits into narrow gaps while maintaining reliable engagement with nuts and bolts. The wrench is intended for routine tightening and loosening tasks on small fasteners in automotive, bicycle, appliance repair, and equipment maintenance applications.

Advantages

The slimline profile allows access to confined spaces where standard wrenches cannot reach, while the box end ensures a secure grip around fasteners to reduce rounding. The flat open-end provides quick placement and release on bolt heads and allows rotation in alternating positions when clearance is limited. The combination of two working ends in a single durable tool reduces the need to switch tools frequently during service and repair tasks.

Suitable for

• Automotive and motorcycle maintenance on small fasteners
• Bicycle repairs and adjustments
• Household appliance servicing and assembly
• Electronics enclosures and light equipment maintenance
• Workshops and professional tool kits requiring low-profile wrenches

Key specifications

• Size: 7 mm nominal wrench size suitable for matching bolts and nuts
• Design: combination of flat open-end and box (ring) end in a slimline profile
• Profile: low-profile/flat head for access in tight spaces
• Function: tightening and loosening of hexagonal fasteners
• Material and finish: forged metal construction with durable surface treatment for wear resistance

How to use

Select the 7 mm end that matches the fastener head. Position the box end over the fastener for maximum contact and torque when space allows; use the flat open-end for quick placement or when limited clearance prevents ring engagement. Apply steady, controlled force and avoid sudden impacts to protect the tool and the fastener. For reversing direction, reposition the wrench as needed using the slim profile to access alternate turning positions in restricted areas.

Usage recommendations

Use the box end for final tightening and removal to minimize rounding of fasteners. Inspect the wrench before use for wear or damage and replace if edges are rounded or cracked. Combine with appropriate extensions or adapters only when they are rated for hand tool use; do not use as a hammer or pry bar. Store in a tool roll or dedicated slot to protect the slim profile from deformation.