Japanese Type I Rifle Cleaning Kit

I just picked this nice Japanese Type I Rifle Cleaning Kit. I never seen one of these and with google search only found one example. Are these hard to come by? Also, believe it may be missing 1 or 2 pieces but not sure. Writing on the back but hard to see. There was a firing pin that was also in the bag, is it for the Type I Rifle? Thanks for any information you can provide about this.

Regards, David.