Cast hardened 21mm lead media weighing 2oz for milling compositions and separate chemicals.

NON SPARKING so can be used for live compositions.

To calculate you requirements :

50 x 17mm balls weigh 1.45kg & occupy roughly 0.2 of a litre

50 x 21mm balls weigh 2.9kg & occupy roughly 0.45 of a litre

50 x 24mm balls weigh 4.35kg & occupy roughly 0.75 of a litre

50 x 26mm balls weigh 5.8kg & occupy roughly 1.4 litre

Milling media needs to be an absolute maximum of 1/4 of your milling jars' ID and it is advised to be in the region of 1/8 for best milling.

It should occupy 1/2 of the milling jars volume.

To calculate the total volume of your jar use this calculator:  VOLUME CALCULATOR