This is a Propeller Shaft for the Traxxas Blast RTR Boat. This part holds the Propeller and goes in the U-Joint. FEATURES: Made of Metal Construction Silver in Color YOU WILL RECEIVE: One Propeller Shaft REQUIREMENTS: Installation onto the Traxxas Blast RTR Boat SPECIFICATIONS: Length: 1-9/16" Diameter: 0.155" (3.9mm) EEW 5/16/02 ir/kh &