What are combination wrenches?
Combination wrenches pair an open end for quick placement with a box end for secure torque on stubborn fasteners. Keep both SAE (inch) and metric sizes on hand to match hardware across equipment, vehicles, and fixtures.
Key features
- Open + Box End: Fast access on one side, high-torque, slip-resistant drive on the other.
- 6-Point & 12-Point: 6-point grips flats for maximum torque; 12-point offers more swing angles in tight spaces.
- Ratcheting Options: Box end ratchets to speed repetitive fastening without lifting off the fastener.
- Flex-Head Styles: Articulating box end reaches around obstructions and inside equipment.
- Offset Box End: Raised profile clears knuckles and nearby protrusions.
- Lengths & Finishes: Standard or long-pattern for leverage; polished or satin for easy cleaning and grip.
How to choose
- Match the system: SAE or metric, verify the fastener size before you begin.
- Standard vs. ratcheting: Ratcheting speeds cycle time; non-ratcheting gives a simple, solid box end.
- Pick the drive: 6-point for high-torque or worn fasteners; 12-point for more engagement angles.
- Head style: Flex-head for access, fixed head for maximum strength.
- Length: Long-pattern for leverage, standard for tight quarters (avoid cheater bars).
- Build your kit: Start with common sizes and add singles to fill gaps you encounter in the field.
Use & care tips
- Seat the box end fully on the flats and pull toward your body to reduce slipping.
- Use the open end only when access prevents using the box; re-seat frequently to avoid rounding.
- Wipe clean after use; inspect for rounding or deformation and replace damaged tools.
- Store by size in a rack or roll so the right wrench is always at hand.
Related tools
- Ratcheting wrench sets (flex and fixed head)
- Socket & ratchet sets for higher torque and deep access
- Torque wrenches for critical fasteners
- Wrench organizers, rails, and roll pouches
Combination Wrenches FAQs
6-point or 12-point—what’s better?
6-point box ends contact more of the fastener flats and are best for high torque or slightly worn hardware. 12-point ends provide twice as many entry angles and are helpful in tight swing arcs.
When should I choose a ratcheting combination wrench?
Use ratcheting styles for repetitive fastening where you can keep the box end on the fastener and “click” through strokes, great in tight spaces. For maximum strength, a fixed box end is preferred.
Do I need both SAE and metric?
Yes, equipment and vehicles often mix systems. Carrying both prevents rounding and ensures a precise fit.
What size set should I start with?
For SAE, common ranges are 1/4"–1"; for metric, 8–19 mm. Add long-pattern or flex-head singles for the sizes you use most.