The product is a genuine STIHL Blower Tube Nozzle designed for models BG55, BG56, BG65, BG85, BG86, SH55, and SH85. It is a flat nozzle type nozzle tube, sold as a single unit. The nozzle is compatible with leaf blower/vacuum combo and handheld leaf blower products. The model number is 4229-708-6301.