Open-end and ring wrench Dedra 38 mm model 1466

Combination wrench Dedra model 1466, size 38 mm, is a hand tool with an open-end on one side and a ring (box) end on the other. It is designed for tightening and loosening hexagonal nuts and bolts of 38 mm across flats. The tool is made of metal and intended for use in automotive, mechanical and household repair tasks where a robust 38 mm wrench is required.

Advantages

The open-end allows quick placement on fasteners in confined spaces while the ring end provides secure contact on bolt heads to reduce rounding. A single-piece construction ensures alignment between both ends and reliable torque transfer. The 38 mm size covers larger fasteners commonly found on heavy machinery, truck components and some structural fixtures. The metal construction offers durability and resistance to deformation under typical workshop loads.

Suitable for

• Automotive repair and maintenance (wheel hubs, suspension and driveline fasteners)
• Mechanical and industrial maintenance where 38 mm fasteners are used
• Household and outdoor equipment repair involving large nuts and bolts
• Assembly and disassembly of structural fittings and machinery components

Key specifications

• Wrench type: combination (open-end and ring/box end)
• Nominal size: 38 mm across flats
• Material: metal alloy suitable for hand tool applications
• Ends: one open jaw and one closed ring for hexagonal fasteners
• Construction: single-piece forged or machined design for strength and alignment

How to use

Select the 38 mm combination wrench for fasteners that match the nominal size. For quick adjustments in restricted access spaces, engage the open-end jaw onto the nut or bolt and apply controlled torque. For maximum contact and reduced risk of rounding, fit the ring end fully over the hexagonal head and turn using steady force. Ensure correct body positioning and hand placement to maintain control and avoid slipping. Inspect the wrench before use for signs of wear or damage and do not apply torque beyond the tool’s intended capacity.

Usage recommendations

Use the ring end for final tightening and loosening to minimize fastener damage; use the open end when alignment or space requires a thinner profile. Combine with appropriate safety practices: wear eye protection, secure the workpiece, and avoid using cheater bars or extensions that can overload the wrench.