Each adapter is machined with a tighter diameter, creating a seal between the adapter and the marker’s front bolt O-ring increasing consistency and performance over that of competing brands. TechT's adapters are backwards compatible to all previously manufactured specifications and thread types. Made entirely of aircraft grade aluminum, the iSwitch is micro polished and treated through a process of custom anodizing to maintain the highest level of performance and durability. As a result, these adapters will not decrease your marker’s accuracy or cause an increase in ball breakage. As with all TechT products, each adaptor is made in the U.S.A. and backed by a full lifetime warranty.