8 types of N scale stake pockets, 4 have single staples, 4 double, 24 of each. Total 192 pieces. Each pocket has a recess for a stake and a 0.6x2mm mounting pin on the back to fit in a #72 drill hole.
Single staple (or U-bolt) styles (2) and variants measure ~1.2 x 1.3 mm
Double staple style and variant measures ~1.2 x 1.5 mm
Double ribbed style is a little larger
Triple ribbed cast style also larger
Clean with alcohol before painting. Use Bestine rubber cement remover if particularly greasy.
Contact firstname.lastname@example.org for different quantities. See also my A14 and A16 mixed staple styles with stakes. It's probably a good idea to check the "print it anyway" box when ordering because some details may be thinner than design rules allow.