Magazine tube plug for tip-cap style .35 Remington Marlin 336 rifles, marked "35Rem". Will not work for most barrel-band style rifles. Caliber marking is offset toward the bottom of the cap to avoid reading interference from being close to the barrel. Polished Bronze Steel is the recommended material, and the material the part was designed around. May require some fitting. I have done my best to adjust the dimensions to compensate for the shrinkage rate of the Bronze Steel and other stainless-based materials, but the "up to 30% shrinkage" rate of the material means that I erred on the side of being over-sized, so that minor fitting can correct a dimensional issue; whereas being too small would just be a bad part.