Combination wrench set Proline 58714 — 12 pieces, assorted sizes

Proline 58714 is a 12-piece combination wrench set that combines an open-end and a box-end on each tool to provide versatility for a broad range of mechanical and maintenance tasks. The set includes twelve commonly used metric sizes from 6 mm to 22 mm, supplied in assorted sizes to cover routine work in automotive repair, plumbing, assembly and general workshop maintenance. Tools are intended to deliver controlled torque and access to fasteners in confined spaces where both open and ring engagement are required.

Advantages

The set offers a compact selection of metric combination wrenches that reduce the need to carry multiple single-purpose tools. Each wrench delivers the two most frequently used engagement types—open-end for quick turning and box-end for secure grip—on a single shank, simplifying workflow and speeding up repetitive operations. The assortment of sizes makes it possible to address a wide variety of fasteners without gaps in the most common metric range.

Suitable for

• Automotive maintenance and light vehicle repairs
• Household plumbing and pipe fittings
• Mechanical assembly and disassembly
• Workshop and garage general maintenance
• Hobbyist projects and DIY repairs

Key specifications

• Set composition: 12 combination wrenches, each with an open-end and a box-end
• Included sizes: 6 mm, 8 mm, 9 mm, 10 mm, 12 mm, 13 mm, 14 mm, 15 mm, 17 mm, 18 mm, 19 mm, 22 mm
• Drive type: manual hand wrenches with dual-end configuration
• Intended fastener system: metric hexagonal nuts and bolts
• Application environment: workshop, garage, service and home use

How to use

Select the wrench size that matches the nut or bolt head to ensure a secure fit, then position the box-end for maximum contact when higher torque is needed or when working in confined spaces. Use the open-end for initial turning, quick adjustments, or when access prevents using the box-end. Apply steady, controlled force and avoid sudden impacts; where possible, pull the wrench toward your body rather than pushing to reduce the risk of slipping. Maintain proper hand positioning and inspect wrenches for wear before use.

Usage recommendations

Store the set in a dry place to prevent corrosion and keep sizes organized to reduce search time. Use the box-end for high-torque operations and the open-end for quick access. Avoid using damaged or excessively worn wrenches, and do not use these tools with power tools or cheater bars to prevent deformation and personal injury.