Sold by the piece. FINISHESSIZESCASE QUANTITYBAG QUANTITYAVERAGE TENSILE STRENGTH (LBS)NICKEL PLATED3/4" (3 X 20 X 12 mm)5,0001,000 BLACK OXIDE1" (3.5 X 25 X 13 mm)2,000500220 LBSNICKEL PLATED1" (3.5 X 25 X 13 mm)2,000500220 LBSBLACK OXIDE1 1/2" (3.5 X 38 X 13.5 mm)2,000100810 LBSNICKEL PLATED1 1/2"