2-in1 Steel Screw Fit Interchangeable Plug Tunnel - Pair of each ,asle can use to stretchering your piercing gauge. Material: 316L Surgical Steel Gauge: 4G=5mm Taper length:25mm; Tunnel length:10mm 6 PCS Per Pack: 2 tapers, 2 tunnels, 2 internally threaded screw on backs (for the tunnels), come with one gift velvet bag. Description:You will receive 6-15pcs Ear Tunnel Plugs Stretching Kit 6g - 00g Which Size You Choose.