JSB pellets, manufactured in Bohumin, Czech Republic by Joseph Schulz, are considered by many to be the most accurate pellets available in the entire world. The Exact Diabolo is an intermediate weight, round nose pellet that will deliver improved flight stabilization and fine accuracy. JSB Match Diabolo a.s. first model in .25" caliber! Of course, it is carefully designed, precisely produced, and hand-pick quality controlled so very accurate. We are confident that your rifle will love them. .25" caliber, domed, 25.4 grains, with 350 count per tin.