Platinum 615
The official UMB ball set
Box set contains:
yellow ball with 6 blue rotors
red ball with 6 blue rotors
white ball with 6 blue rotors
cleaning cloth
Specifications:
Size: 61,5 mm
Weight: 210 grams +/- 1,0g
Density: 1,73
Roundness: ≤ 0,03mm
Hardness: ≥ 59 Rockwell
Composition: Phenolic Resin
