AlphaAcc 1780 Gold Tone Jump Rings 3mm-8mm with Plastic Container Jump Rings ranging from 3mm to 9mm. 3mm(800pcs),4mm(400pcs),5mm(200pcs),6mm(100pcs),7mm(100pcs),8mm(100pcs) 9mm(80pcs). 20 gauge,good quality Antique Bronze appearance,Large variety of sizes Box size: 6.2x1.4x0.72 inches A lot of jump rings in each compartment.If you're looking at making jewelry that uses a lot of different sizes of jump rings, these will work well for your projects. General for jewelry makers. DIY your necklace or any other jewelry making handmade crafts