Open-end/box wrench King Tony 20 mm FT-75520

The King Tony 20 mm combination wrench FT-75520 is a hand tool that combines an open-end jaw and a boxed end to work with 20 mm hex fasteners. The open end provides fast access to nuts and bolts in confined or partially obstructed positions, while the boxed end gives a more secure seating for higher torque and reduced risk of rounding. The wrench is intended for routine tightening and loosening tasks in automotive, mechanical and general maintenance work where a 20 mm size is required.

Advantages

This combination wrench provides the flexibility of two working ends in a single tool, reducing the need to switch between separate wrenches. The open end allows quick placement on fasteners and easier use in tighter spaces; the boxed end offers better grip and torque transfer for stubborn or fully tightened bolts. The single-piece construction ensures consistent alignment between ends and durable performance during repeated use.

Suitable for

• Automotive repairs and wheel or suspension fasteners that use a 20 mm head
• Mechanical assembly and disassembly of machines and equipment with 20 mm hex nuts
• General maintenance and workshop tasks requiring a reliable 20 mm wrench

Key specifications

• Wrench type: combination (open-end and boxed end)
• Size: 20 mm across flats
• Ends: one open jaw and one boxed (ring) end for secure seating
• Material and finish: forged metal with corrosion-resistant surface treatment for workshop use
• Design: angled open end for access in confined spaces and boxed end for torque application

How to use

Select the 20 mm combination wrench and place the appropriate end over the hex fastener. Use the open end for quick engagement and to work in areas with limited clearance; for higher torque or final tightening/loosening, place the boxed end fully over the fastener to ensure even contact around the head. Apply steady force in the intended rotation direction, avoid sudden impacts, and reposition the wrench as needed. Inspect the wrench and fastener after use to ensure proper engagement and to avoid rounding.

Usage recommendations

Use the boxed end for high-torque applications and the open end for quick adjustments or where access is limited. Avoid using cheater bars or excessive force that could damage the wrench or fastener. Keep the tool clean and store it dry to maintain the corrosion-resistant finish and functional accuracy.