Biliary zebra guidewires can be divided into two types: J-type soft tip and straight soft tip. Each type is available in various specifications based on the diameter and length of the guidewire. The core wire of the guidewire is made of nickel-titanium alloy, and the surface is coated with polytetrafluoroethylene. The soft tip material is polyurethane. The product is provided in a sterile state, sterilized with ethylene oxide, and intended for single use.