Color: Silver Material: Stainless Steel Package: Bag Length: 12 cm/4.7 inches Insert Length: 11 cm/4.3 inches Insert Max Dia: 0.98 cm/0.4 inches Glans Ring Dia: 2.9 cm/1.1 inches Net Weight: 0.05 kg/0.11 lb/1.76 oz   PS: Snap Electrode Lead Wires(not include)