Combination Wrench KS Tools 503.4207 7 mm Chromium-vanadium Steel

The KS Tools 503.4207 7 mm combination wrench is manufactured from chromium-vanadium steel to provide a balance of strength and wear resistance for everyday mechanical tasks. Sized at 7 mm with a total length of 140 mm and a weight of 30 g, this tool meets DIN 3113 and ISO 3318 standards to ensure dimensional accuracy and consistent performance for workshop and home use.

Advantages

The chromium-vanadium steel construction delivers improved tensile strength and durability compared with basic carbon alloys. Conformance to DIN 3113 and ISO 3318 provides consistent wrench opening tolerances and reliable engagement with fastener heads. Its compact 140 mm length and 30 g weight make the tool easy to handle in confined spaces and suitable for jobs that require precise wrist control.

Suitable for

• Automotive maintenance and light engine work
• Bicycle and motorcycle repairs
• Assembly and disassembly of household appliances
• General mechanical and maintenance tasks in workshops

Key specifications

• Wrench type: combination wrench (open end and boxed end)
• Size: 7 mm
• Material: chromium-vanadium steel
• Length: 140 mm
• Weight: 30 g
• Standards: manufactured to DIN 3113 and ISO 3318 dimensional specifications

How to use

Select the 7 mm combination wrench for the corresponding fastener size. Place the open end or boxed end over the nut or bolt head, ensuring full seating before applying torque. Apply steady, controlled force to avoid rounding fasteners; when higher torque is required, use the boxed end for improved engagement. Inspect the tool for damage before use and maintain a clean contact surface for reliable operation.

Recommendations

Use the wrench within its intended size range and avoid applying sudden impacts or using it with extensions for increased leverage. Keep the tool clean and store it in a dry environment to prevent corrosion and preserve the chromium-vanadium surface finish.