Wrench set Rockforce RF-5103P — flat/open-end wrenches 8–36 mm, 10 pieces

Rockforce RF-5103P is a 10-piece set of flat/open-end wrenches covering metric sizes from 8 mm to 36 mm. The set includes commonly used sizes to handle a wide range of nuts and bolts in mechanical, maintenance and assembly tasks. Each wrench features a flat profile with an open-end geometry designed for access in tight spaces and conventional fastening work in workshops, garages and professional environments.

Advantages

The set provides a compact selection of metric open-end wrenches that eliminates the need to search for individual sizes. Solid construction and uniform sizing allow for reliable torque transmission and consistent engagement with fasteners. The flat/open-end design offers ease of access to bolts recessed or positioned where a ring or combination wrench would not fit. The assortment of sizes from 8 mm to 36 mm covers light to heavy-duty applications commonly encountered in automotive, industrial and household maintenance.

Suitable for

• General mechanical maintenance and repairs
• Automotive service and assembly work
• Workshop and garage tasks requiring multiple wrench sizes
• Installation and dismantling of machinery and equipment
• Home projects involving metric nuts and bolts

Key specifications

• Type: flat / open-end wrench set
• Number of pieces: 10
• Metric sizes included: 8 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 17 mm, 19 mm, 24 mm, 36 mm
• Finish: forged metal with a functional surface treatment for corrosion resistance
• Design: straight flat profile with open ends for two-point grip
• Intended use: fastening and loosening nuts and bolts

How to use

Select the wrench with the correct nominal size to match the fastener and position the open end fully over the nut or bolt head. Apply steady, controlled force in the required direction to loosen or tighten, ensuring full contact between wrench jaws and the fastener flats to reduce slippage. For confined spaces, orient the wrench so the open end engages the fastener with minimum interference. After use, clean off dirt and lubricants and store the set in a toolbox or on a rack to maintain the tools' condition and sizing accuracy.

Usage recommendations

Use the correct size wrench from the set to avoid rounding fastener edges. Do not use the open-end wrenches as hammering tools or prying bars. For higher torque requirements, use appropriate length or a different tool type rated for the load and follow safety procedures, including eye protection and secure positioning of the workpiece.