6mm biodegradable  0.25 grams  2700 rounds  White 5.930mm +/- 0.025mm dia., 5.928mm mean dia. 5.907mm min. dia., 5.947mm max. dia. For precision airsoft use  Made to exacting standards using high-quality materials. Bio-resin research conducted by our research lab in Holland, and manufactured on the most advanced equipment in our plant in Seoul, South Korea.
        
 
                     
                    