Wrench (flat-ring) 20 mm Dedra 1454P — open-end and ring spanner, 20mm

Flat-ring (combination) wrench Dedra 1454P, size 20 mm, is a single-piece steel hand tool designed for tightening and loosening hexagonal nuts and bolts. One end features a 20 mm open jaw for quick engagement, while the opposite end provides a closed ring (box) profile for secure grip and reduced rounding of fasteners. The compact, flat profile helps reach confined spaces and provides reliable torque transfer for common automotive, household and workshop tasks.

Advantages

The Dedra 20 mm combination wrench combines the speed of an open-end spanner with the holding power of a ring end in one compact tool. Its single-piece steel construction improves strength and durability while the flat design increases accessibility in narrow areas. The ring end delivers a positive engagement around the nut or bolt head to reduce slipping, and the open jaw allows quick repositioning without removing the tool.

Suitable for

• Automotive repairs and maintenance (brake lines, engine components, suspension fittings)
• Household repairs and furniture assembly
• General workshop and maintenance tasks
• Plumbing and HVAC service where a compact spanner is needed

Key specifications

• Size: 20 mm across flats
• Type: combination (open-end and ring/box)
• Material: steel single-piece construction
• Profile: flat, low-profile body for access to confined spaces
• Ring end: closed box for full-contact engagement with fasteners

How to use

Select the 20 mm combination wrench when the fastener head matches the size. Use the open jaw end for rapid initial turning or where the ring cannot be positioned, and use the ring end for final tightening or loosening to minimize rounding and slipping. Position the wrench fully onto the fastener, apply steady force perpendicular to the handle, and avoid using cheater pipes or excessive impact force that could damage the tool or fastener. After use, wipe clean and store in a dry place to prevent corrosion.

Usage recommendations

Use the open end for quick repositioning and the ring end for maximum grip; inspect the wrench periodically for wear or deformation and replace if the jaw or ring shows signs of rounding or cracking.