Used MT1848, seems to work fine. No observable head spread and the head has a zirc fitting for grease. Nice Japanese manufacture. 14 day test drive on this tool.
MATCO MT1838 Air Ratchet Wrench 3/8" Made in Japan
VTG Craftsman Model 875-188020 Pneumatic Air Ratchet 3/8" WORKING Made in Japan
MAC TOOLS Air Ratchet 3/8 AR154 Made in Japan
Chicago Pneumatic CP 830 3/8"Dr HighTorque Air Ratchet Max 100 Fb Made in Japan
Mohaw 3/8 Drive Air Ratchet Model 33 Made In Japan
(2) MAC Tools 1/4" Drive Air Ratchet Model AR2865 Made in Japan Broken