MAD Heaters Quartz Balls 2.5 mm (100-Pack)

The quartz balls by MAD Heaters are intended as filling for a Tempest Cap. This variant has a diameter of 2.5 mm. The manufacturer states approximately 100 balls per package.

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Size and Package Quantity

MAD Heaters also offers a 3 mm variant with approximately 50 balls. Therefore, choose the 2.5 mm variant for this catalog item. The package quantity is an approximate manufacturer specification; according to the manufacturer, it is sufficient for one Tempest Cap and a few extra balls.

Source: MAD Heaters – Product Page, checked on 10/10/2026.