These Surebonder upholstery staples, 3/8 in L, come 5000 per pack. These fine wire 22 ga staples have thin wire which allow them to penetrate all types of upholstery. They have a 3/8 in crown so they are wide enough to hold and narrow enough to put in tight places. We recommend these with our model 9615 Surebonder pneumatic upholstery stapler.