Open-end/box wrench 17 mm Dedra 1451P — hand tool for tightening and loosening bolts

Dedra 1451P is a 17 mm open-end/box combination wrench designed for manual tightening and loosening of bolts and nuts. The tool provides a 17 mm contact profile on one end and an open jaw on the other, enabling torque transfer in confined spaces and straightforward access where a single-size wrench is required. Its design suits general maintenance, repair, assembly and DIY tasks that call for a precise 17 mm fit.

Advantages

The combination of a closed box end and an open end offers versatility for different fastener access angles without changing tools. The 17 mm sizing ensures accurate engagement with corresponding nuts and bolts to reduce rounding and slippage. The single-piece construction provides consistent alignment between ends, and the compact length allows work in tighter spaces compared with ratcheting or multi-tool solutions.

Suitable for

• Automotive maintenance and light repairs (17 mm fasteners)
• Household tasks such as furniture assembly and appliance maintenance
• Workshop assembly and disassembly of mechanical components
• DIY projects requiring a reliable 17 mm hand wrench

Key specifications

• Tool type: combination wrench (open-end and box end)
• Size: 17 mm working profile
• Ends: one open jaw, one closed ring/box end
• Drive engagement: fixed, single-size contact surfaces for torque transfer
• Intended use: manual hand operation for tightening and loosening bolts and nuts

How to use

Select the 17 mm end that best fits the fastener and position the wrench so the contact faces fully engage the flats of the bolt or nut. For initial loosening in restricted access areas use the open end; for higher torque and reduced risk of rounding use the box end. Apply steady and controlled force in the required direction, keeping the wrench aligned with the fastener to avoid slipping. After use, wipe the tool clean and store it in a toolbox or on a rack to protect the contact faces.

Usage recommendations

Use only on correctly sized 17 mm fasteners; do not use the wrench as a hammer or pry bar. For bolts that require higher torque, consider using a longer lever or a torque-rated tool to avoid damaging the wrench or fastener. Inspect the contact surfaces regularly for wear and replace the tool if rounding or deformation is observed.