This a typically eclectic Japanese toy blog that I adore.
Within it is the first article I've found in Japanese about the Japanese UFO Project SWORD rubbers that I collect. At some point I will try to get it translated.
Interestingly some of the rubbers are of the less common transparent type.
The Japanese blogger has also blogged about rubber hands.
This may or may not shed light on the mysterious hand model number system found on the undercarriages of the UFO Project SWORD rubbers, which I vlogged about some time ago on You Tube.