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Red 12-inch groove joint locking pliers with bi-material grips

Craftsman CMHT81721 12-Inch Groove Joint Locking Pliers

SKU CH-RWZD-KM371 MPN CMHT81721

12-inch groove-joint locking pliers grip up to 1" flat and 2.12" pipe with drop-forged steel jaws and bi-material handles

  • Total length2.1082 L x 7.7978 W x 37.6936 H centimeters
  • Jaw capacity1 in (2.54 cm)
  • Handle styleAlloy Steel
  • Jaw designGroove Joint
  • Position count1
  • Handle constructionSteel
  • Comfort and control from multi-zone bi-material grips
  • Strength and durability through drop-forged steel construction
  • Precision-machined jaws ensure secure gripping and holding
  • Corrosion-resistant finish protects against rust and wear
  • 12-inch length with 2.12-inch pipe capacity for versatile use

12-Inch Groove Joint Locking Pliers

The Craftsman CMHT81721 is a 12-inch groove joint locking plier built for mechanics and tradespeople who need a secure, adjustable grip on pipes, nuts and irregular shapes. Drop-forged steel construction and a corrosion-resistant finish support daily professional use.

2.12-Inch Pipe Capacity

The maximum pipe capacity of 2.12 inches is the single specification that determines whether this tool fits the workpiece. If the pipe or fitting exceeds that diameter, the jaws cannot close far enough to lock securely.

Jaw Capacity and Adjustment Range

A 1-inch jaw capacity combined with the groove joint design provides multiple width settings for bolts, fittings and flat stock up to that limit. The tool runs out of adjustment on larger diameter pipe or heavy structural sections beyond 2.12 inches.

How it compares

Measured against everything we stock in Pliers, Wrenches & Gripping Tools, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 56% of the 2,110 comparable items (median $23.99).

Specifications

Product
Brand nameCraftsman
Model nameCMHT81721
Part numberCMHT81721
Color and finishRed
Size & build
Size or dimensions6
Main materialSteel
Total length2.1082 L x 7.7978 W x 37.6936 H centimeters
Handle styleAlloy Steel
Jaw designGroove Joint
Handle constructionSteel
Band materialAlloy Steel
Compatibility
Fit and compatibilityHolding,Locking Pliers,Gripping
More details
Jaw capacity1 in (2.54 cm)
Position count1
Pipe capacity2.12 in (5.38 cm)
Commercial or home useHolding,Locking Pliers,Gripping

Questions about this item

What does the 12-inch overall length mean for reach and leverage in a real job?

The 12-inch length gives extended reach into tight spots and multiplies hand force for strong clamping on large workpieces.

How does the groove-joint mechanism limit the maximum jaw opening?

The single-position groove joint sets a fixed 1-inch jaw capacity and 2.12-inch pipe capacity, so the pliers cannot open wider than those limits.

What clearance do the 2.1082 cm thickness and 7.7978 cm width need in a tool drawer?

The pliers measure 2.1082 cm thick by 7.7978 cm wide, so they fit in standard drawers but may not clear very shallow organisers.

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