产品规格风洞：342凹洞
  产品重量45.-45.9g
  外皮层厚度：直径：1.8mm
  产品尺寸直径：42.6-42.8mm
  产品弹力:60%-65%
  产品材质：内芯合成橡胶，外皮杜邦沙林，最外面电镀一层金色。

用途：只适合作推杆练习,观赏球 

Wind tunnel: 342 cavity

Product weight 45.-45.9g

Thickness of outer cortex: diameter: 1.8mm

Product size diameter: 42.6-42.8mm

Product elasticity :60%-65%

Product material: inner core synthetic rubber, outer skin dupont-sarin, the outermost plating a layer of gold.

Purpose: for putter practice and ball watching only