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1/4" Air Ratchet Wrench

Model : ST-55591A

● The ratchet wrench can be used in the narrow working space where other tools can not reach, to fasten bolt and nut easily.

Remove: Sirst, loosen bolt by wrench then take bolt out with air ratchet.

Fasten: Push trigger to position the bolt then lock it with torque wrench.


Model #


Capacity Bolt size

6,7,8,9,10,11,12 mm (1/4" ; 3/8")

Free Speed

 180 RPM

Average Air consumption

 14 cfm (300 l/min)

Max Torque

 7.38 ft-lb (10 N-m)

Air inlet


Air hose


Suggest Air pressure

 6.2 bar (90 PSI)


 2.87 lbs (1.3 kgs)

Overall length

 11.81" (300mm)

Packing: 10pcs/Ctn/16.4kgs/1.4 cuft