Some push pins are bent in advance, if you found the push pin are straight, Pls BEND THE PIN SLIGHTLY following THE INSTRUCTIONS on the blue card you received. This earring is sold as a single piece, NOT A PAIR! Bar Gauge (thickness): 20 gauge (0.8mm),Bar length: 6mm. Made of 316L surgical steel, pvd 18k gold-plated plated. 316L steel is the most basic metal used in body jewelry. It is the basic requirement of metal to be used in initial piercings and for healing. For most people this grade of steel works just fine. The push in design threadless piercing jewelry looks cute as piercing jewelry. Perfect for various piercings: tragus, cartilage, helix, lip, nose, earlobe, rook or other piercings it can fit. FANSING Nose Studs Flat Disc Nose Rings for Women Men Surgical Steel Labret Stud Threadless for for Cartilage Helix Rook Conch Tragus Earlobe Piercings 18k Gold-plated 1.5mm 20 Gauge 6mm