Click to expand Tap to zoom Gilder GA500 TEM aperture grid, 500um hole Cu (AU-21-1G Cu (AU-21-1GA500) / Ni (AU-21-2GA500) /Au (AU-21-3GA500) SKU AU-21-1GA500 Original price $75.90 - Original price $75.90 Original price $75.90 $75.90 - $75.90 Current price $75.90 | / Choose a variant 100 - $75.90 Units per package: 100 100 Quantity Add to cart