Extra long air hammer drift set Ideal for removing corroded bolts or long pins 7" (177mm) long parallel shaft design will not get stuck in holes Standard .401" shank fits most air hammers Manufactured from forged and heat treated chrome molybdenum steel Sizes Included: PRT5736-01 - 3/16" (5.2mm) PRT5736-02 - 1/4" (6.5mm) PRT5736-03 - 9/32" (6.9mm) PRT5736-04 - 5/16" (7.7mm) PRT5736-05 - 3/8" (9.3mm) PRT5736-06 - 1/2" (12.7mm)