JFB Grade Ball

Silex Ball

Standard Size :
• 4~6 cm
• 6~8 cm
• 8~10 cm
• 10~12 cm
• 12~15 cm

Si02	97%min
Fe203	0.3%max
Hardness	Moh 6.5~7
Density	2.5-2.6g/cm³