PINHOLE APERTURE SET OF 12 APERTURES - NEW. This is a set of 12 micro-drilled pinholes in individual square sheets at least 3/4" square X .001" grade 400 full hard stainless steel. The thinner the better! No corrosion or tunnel vision here. Far superior apertures than laser etched thick brass. Sizes of apertures measure: .0059", .0087", .0102", .0126", .0138", .0160", .0181", .0200", .0225", .0250", .0276", .0320". These sizes fit focal lengths from 16mm to 473mm if used optimally. Includes all instructions needed. An excellent way to get into this fascinating area of photography. One will not be disappointed with the results. PLEASE READ PAYMENT INSTRUCTIONS. All sales final. Any questions please ask. Please note that I use The Global Shipping Program for international shipping.