Comparison : Item # 0012-6646, 3mm KBr Die Set
Item # 0012-6647, 5mm KBr Die Set
Item # 0012-7669, Replacement SS Anvils, 5mm, pk/2
Item # 0012-6648, 10mm KBr Die Set
Item # 0012-7670, Replacement SS Anvils, 10mm, pk/2