Features: 1) Specification: 18G, 20G, 21G, 22G, 23G, 24G, 25G, 26G, 27G. 2) Butterfly style Inner Features: 1) Specification: 18G, 20G, 21G, 22G, 23G, 24G, 25G, 26G, 27G.2) Butterfly styleInner packing:Individually wrapped100pcs/boxOuter packing: 50boxes/carton Disposable Scalp Vein Set