1 complete set of Dynasphere Bronze 2-1/4 in. Belgian Billiards Pool Balls! Billiard balls have an extremely smooth surface which makes sure chalk and other contaminants can be easily be removed, without leaving any “shadowing” of the contaminants, which is typical for other Phenolic resin Balls. Whereas other brands charge extra for selected sets with minimal weight-differences, we at Dynaspheres feel this should be “standard issue”; the maximum weight ? deviation within 1 set is 1,5 gram/ball over our complete range. Extremely smooth surface which makes sure chalk and other contaminants can be easily removed, without leaving any “shadowing” of the contaminants, which is typical for other Phenolic resin Balls. Less “bad contacts” or “Buttages”. Whereas other brands charge extra for selected sets with minimal weight-differences, we at Dynaspheres feel this should be “standard issue”; the maximum weight ? deviation within 1 set is 1,5 gram/ball over our complete range. Very strict tolerances, which are the most stringent in the industry. Belgian Design, Belgian Quality Control, Belgian Distribution, Belgian Customer Service! Set contains 1 cue-ball, 7 “striped” balls and 8 “solid” balls SIZE:57,2 mm +/- 0,08 mm WEIGHT:169 gram +/- 1,0 gram GRAVITY:1,725 +/- 0,02 HARDNESS:≥ 59 Rockwell COMPOSITION:extremely high phenolic resin content