These are Long Heavy Duty needles. These needles are used on things like carpets, canvas, upholstery, coats, tents, leather and so on. These needles are durable and are of good quality. The package contains 4 Long Heavy Duty needles which work in Avery 5544/5552. Ready for shipment. Order now. If you have specific needs for your store, please call us 1-800-426-5708.