Thumb Bottom Fits Mausers 93-96 & 98
Extends higher than factory "but-ton" so floorplate can be
released using the thumb instead of a bullet tip, punch or
screwdriver. Easily replaces the original latch and uses factory
spring and pin. No gunsmithing required.
Big Book Catalog, Issue:65, Page:171
SPECS: 1-1/8" (2.9cm) long. .250" (6.3mm) diameter. Polished
and blued steel.