Features: Accuracy threaded stainless steel insertion tool with a tapered ball tip ensures secure, smooth jewelry replacement for flat back earrings, enhancing stability and reducing slippage risks. Featuring corrosion resistant 304 grade steel construction and a thread free shaft design, this piercing kit enables effortless jewelry application while maintaining hygienic, long lasting performances. Ideal for professional piercers and DIY enthusiasts requiring reliable tools for frequent jewelry swaps in ears, nose, or lip piercings. Streamlines body jewelry maintenance in studios or home settings, particularly effective for snug fit flat back posts during initial piercing aftercare. Compact piercing cone collector included optimizes workspaces organization during delicate jewelry installations, compatible with most standard gauge body jewelry types. Specifications: Material: Stainless Steel Length:3cm/1.18inches Type:A-1/A-2/A-3/B-2/B-4/B-5(Optional) A-1 Size:Approx.1x1.4mm/0.04x0.06inches A-2 Size:Approx.1.2x1.6mm/0.05x0.06inches A-3 Size:Approx.1.6x2mm/0.06x0.08inches B-2 Size:Approx.1.2x1.6mm/0.05x0.06inches B-4 Size:Approx.0.9x1.2mm/0.04x0.05inches B-5 Size:Approx.1x1.2mm/0.04x0.05inches Package Includes: 5Pcs Stainless Steel Perforated Guide Rod note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color about the item.