Original Kubotan Self Defense Key ChainKubotan is a self defense keychain weapon developed by Sōke Takayuki Kubota in the late 1960s. It is typically no more than 5.5-6 inches (14-15 centimeters) long and about half an inch (1.25 centimeters) in diameter, slightly thicker or the same size as a marker/pen. The material is usually of a hard high-impact plastic (e.g. polymer, Lexan). The body of the Kubotan is lined with six round grooves with a screw eye and split ring attachment at one end for keys.Brand New In Package.Manual included.Color = BlackLength = 5.75 inchesWeight = 1.5 oz.Material = High-impact PlasticShipped with USPS.Please ask any questions prior to purchase.