K&S Precision Metals Brass Angles, you are buying one length of the selected type,

Sizes are as follows, please look at diagram for guide to measurements -

#9880 W: 1/8" (3.18mm), H: 1/8" (3.18mm), T: 1/64" (0.39mm), L: 12" (305mm)

#9881 W: 3/16" (4.80mm), H: 3/16" (4.80mm), T: 1/64" (0.39mm), L: 12" (305mm)

#9882 W: 1/4" (6.35mm), H: 1/4" (6.35mm), T: 1/64" (0.39mm), L: 12" (305mm)