4140#2 - 5X - .05 micron_etched
4140#2 - 10X - .05 micron_etched
4140#2 - 20X - .05 micron_etched
4140#2 - 20X - .05 micron_etched_crack
4140#2 - 50X - .05 micron_etched
4140#2 - 100X - .05 micron_etched
4140#7 - 5X - .05 micron_etched
4140#7 - 10X - .05 micron_etched
4140#7 - 20X - .05 micron_etched
4140#7 - 50X - .05 micron_etched
4140#7 - 100X - .05 micron_etched
4140#10 - 5X - .05 micron_etched
4140#10 - 10X - .05 micron_etched
4140#10 - 20X - .05 micron_etched
4140#10 - 50X - .05 micron_etched
4140#10 - 100X - .05 micron_etched
4140#9 - 5X - .05 micron_etched
4140#9 - 10X - .05 micron_etched
4140#9 - 20X - .05 micron_etched
4140#9 - 50X - .05 micron_etched
4140#9 - 100X - .05 micron_etched
4140#8 - 5X - .05 micron_etched
4140#8 - 10X - .05 micron_etched
4140#8 - 20X - .05 micron_etched
4140#8 - 50X - .05 micron_etched
4140#8 - 100X - .05 micron_etched
4140#5 - 5X - .05 micron_etched
4140#5 - 10X - .05 micron_etched
4140#5 - 20X - .05 micron_etched
4140#5 - 50X - .05 micron_etched