【Sizes】From left to right in the first image: ① to ② ① 10G Single Flare Flare diameter: 3mm Shaft length: 6mm (Black catch (O-ring) included, but the material deteriorates easily, so we recommend replacing it yourself as needed / Please check images 3 and 4) ② 8G Single Flare Flare diameter: 4mm Shaft length: 6mm (Catch (O-ring) not included) 【Please Read】 ・Please consider purchasing only if you understand that these are used items. ・We will send them in the cleanest condition possible, but please disinfect them yourself before use. ・No price reduction. ・No individual sales.