Open-end and box wrench 17 mm Topex 35D389

The Topex 35D389 17 mm combination wrench is a hand tool designed for working with 17 mm hexagonal nuts and bolts. It integrates an open-end jaw on one side and a box (ring) end on the other, providing two common contact methods in a single, compact tool. The wrench is intended for general mechanical, automotive and household maintenance where a reliable 17 mm spanner is required.

Advantages

The combination of open-end and box end allows quick positioning on fasteners with the open jaw and secure, full-contact torque with the ring end. The single-piece construction ensures alignment and strength under load while the 17 mm size matches standard metric fasteners. Its compact length offers access in tighter spaces compared with longer spanners, and the dual-end design reduces the number of tools needed for routine tasks.

Suitable for

• Tightening and loosening 17 mm hex bolts and nuts in automotive repair
• General mechanical assembly and disassembly
• Household maintenance and furniture assembly
• Light workshop and DIY projects requiring a 17 mm wrench

Key specifications

• Tool type: combination wrench with open-end and box (ring) end
• Nominal size: 17 mm across flats
• Ends: one open jaw and one 12-point ring end for secure engagement
• Material: forged steel alloy suitable for hand-tool use (manufacturer specification)
• Finish: corrosion-resistant surface treatment (manufacturer specification)
• Typical length: compact format for improved access in confined spaces (manufacturer specification)

How to use

Select the 17 mm combination wrench and position the appropriate end on the fastener. Use the open-end side for quick adjustments or when access is limited; apply the box end when higher torque and full perimeter contact are required. Pull the wrench toward you or push away while keeping the tool aligned with the fastener to avoid rounding. For repetitive or high-torque tasks, use steady, controlled force and re-seat the wrench as needed to maintain contact.

Usage recommendations

Inspect the wrench before use for signs of wear or damage and keep contact surfaces clean. Avoid striking the tool with hammers or using it as a lever extender. For tasks requiring high torque or impact, use appropriate sockets or torque-rated tools to prevent damage to the wrench and fastener.