Model	densityg/cm3	lead containe	Lead Equivalent mmpb
ZF2	4.12	56%	0.22mmpb/mm
ZF3	4.46	61%	0.24mmpb/mm
ZF6	4.78	65%	0.28mmpb/mm
ZF7	5.2	67%	0.32mmpb/mm