Makita TW202D001 CORDLESS IMPACT WRENCH(12.7MM)(18V) 

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Specification
Standard bolt: M8 - M16 (5/16 - 5/8"); High strength bolt: M8 - M12 (5/16 - 1/2")
Dimensions (L X W X H) w/o Battery: 176 x 79 x 191 mm (6-15/16 x 3-1/8 x 7-1/2")
Driving Shank (Square) 12.7 (1/2'')
Impacts Per Minute (Ipm) 0 - 3,000
Max Fastening Torque 200 N.m
Net Weight 1.5 kg (3.3 lbs.)
No Load Speed (Rpm) 0 - 2,300