Chalk 12 boxes with 8 blocks

Esse Magnesium 12 boxes with 8 blocks. Sticks better and powders less than the Chinese magnesium. Magnesium is mainly used in gymnastics, weightlifting, crossfit and all other sports where sweaty hands could use some help to keep more grip. Also available at a discount in large packages of 12, 24 or 36 boxes of 8 blocks of magnesium (discount compared to 1 box) Specifications Chemical Name: Magnesium Carbonate Chemical Formula: 4MgCO3 * Mg(OH) 2 * 4H2O Crystalline: Plate Crystal Recractive: 1.52-1.53 Specific Gravity (g/cm3): 2.1-2.2 Do not ingest! Keep away from young children.