SIZE 61,5 mm +/- 0,08 mm
WEIGHT 210 gram +/- 1,0 gram
GRAVITY 1,725 +/- 0,02
HARDNESS ≥ 59 Rockwell
COMPOSITION extremely high phenolic resin content

Tests performed under controlled conditions:
– Temperature 22-25 degrees Celsius
– Humidity 50% +/- 5%