Have an old model powerfast nailgun mod. 32003. no info as to what size nails/staples it uses. any help?

I believe the gun is made by Hitachi, but not sure.Have an old model powerfast nailgun mod. 32003. no info as to what size nails/staples it uses. any help?
Arrow Fastener Co. 1'; Brad Nail - Brown/White Head





If you have:





Desa PowerFast庐 Electric Nail Gun: 32003





V-track base for easy access in molding and other tight spots.


Hardened steel drive mechanism for long life.


Dual safety features, on/off trigger lock and depress fire safety release.


Easy, one handed nailing for DIY projects; paneling, molding, furniture repair, picture frames, crafts and hobbies. Uses 1';, 18 gauge galvanized steel finishing brad nails

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