MOUNTAIN RM6 5 Piece Reversible Ratcheting Wrench Set - Tight Space

In this review of the MOUNTAIN RM6 5 Piece Reversible Double Box Ratcheting Wrench Set, the bottom line is simple: this kit is for mechanics and DIYers who need a compact range of reliable metric sizes and strong leverage for confined spaces. The set's standout feature is the 90 tooth ratcheting design, which permits a minimal 4-degree swing arc so users can work on stubborn fasteners where a full swing is impossible. It is a practical, everyday set intended to supplement a toolbox rather than replace specialty sizes.

Key Features

• Five essential sizes: Includes 8 mm through 18 mm wrenches to cover common automotive and mechanical needs without excess bulk.
• 90 tooth ratchet: The high tooth count allows for a tight 4-degree swing arc, making it simpler to operate in cramped engine bays and tight assemblies.
• Double box universal spline: The reversible double box end grips standard and metric fasteners to reduce rounding and increase versatility.
• Long, flexible construction: Longer handles give added leverage for higher torque and the flex head helps reach odd angles comfortably.
• Reversible functionality: Easily switch between tightening and loosening to speed up common repair and maintenance tasks.

Who It's For

The set is best for light to medium automotive work, home repair, and hobby mechanics who want a compact selection of metric ratcheting wrenches that perform well in tight areas. The 8 mm to 18 mm spread covers many common fasteners on cars, motorcycles, and household machinery.

Those who should look elsewhere include professionals needing a wider size range or heavy industrial users who require impact-rated tools or larger specialty sizes; also buyers who expect flawless durability across every piece should note a few customers reported occasional ratchet wear on one mid-size wrench.

Pros & Cons

Pros

• High tooth count provides excellent performance in tight swing areas for faster work.
• Versatile double box spline reduces corner rounding on both standard and metric fasteners.
• Long handles and flex heads increase leverage and access at awkward angles.
• Compact five-piece selection balances coverage and portability for a toolbox.

Cons

• Durability is mixed in customer reports, with isolated ratchet failure noted on one size.
• Grip slip resistance drew varying feedback, so users wanting textured handles may prefer alternatives.

Specifications

Brand	MOUNTAIN
Set composition	5 piece wrenches, 8 mm to 18 mm
Ratcheting design	90 tooth, 4-degree swing arc
End style	Double box universal spline, reversible
Head movement	180 degree flex head
Finish	Chrome

Our Verdict

The MOUNTAIN RM6 set is a smart, value-focused choice for hobbyists and shop mechanics who need a small, capable metric ratcheting set for tight spaces. It pairs useful sizes with a high-tooth ratchet and flexible heads to improve access and leverage; while a few users noted isolated durability concerns, the overall combination of features and price makes it a worthwhile toolbox companion.

Frequently Asked Questions

Are these wrenches reversible?
Yes, each wrench has a reversible ratcheting mechanism to switch between tightening and loosening quickly.

What sizes are included?
The set includes five metric sizes spanning 8 mm, 10 mm, 12 mm, 14 mm, and 18 mm to cover common fasteners.

Can they handle tight spaces?
Yes, the 90 tooth design gives a minimal 4-degree swing arc and the 180 degree flex head helps access confined areas.