Replacement T-pin for hole punch, nickel-plated steel, (1) 2-3/8x1-1/8x1/4 inch T-shaped 1.5mm pin and (1) 2-3/8x1-1/8x1/4 inch T-shaped 2mm pin. Sold per pkg of 2. - Fire Mountain Gems and Beads
Making, Measuring and Testing the "Optimal" Pinhole: Pinhole Adventures Part 3 – by Sroyon - 35mmc
HD 4-IN-1 (CVI, TVI, AHD, ANALOG) Pin Hole/Corner Camera 1080p, 2.8mm Pinhole Lens - 1080p 4-in-1 Cameras - HD All-in-One Solutions