Bit Measure Instoreonly The care components glycerine and The care components glycerine and witch hazel extract provide moisture and at the same time protect against dampness thus Effol Hoof Moisture Balance is also suitable for horses in frequent contact with water Its in the name Cavalor Leather Shine adds that extra shine To correctly measure your horses mouth for the correct bit size put it in the horses mouth and lift it to the correct place in the mouth where the bit will sit – just before any wrinkles begin to form mark the bar on both sides just outside the lip crease This measurement can then be used to determine the size of the bit required