These are Replacement Screw Shaft for HPI Cars. FEATURES: Black Steel Construction. YOU WILL RECEIVE: Six Screw Shafts. REQUIREMENTS: HPI Savage. SPECIFICATIONS: Total Length: 18 mm (0.709") Thread Length: 5 mm (0.197") Thread: 5 mm (0.197") Shaft Diameter: 3 mm (0.118") COMMENTS: None. jmm 11/13/02 ir/kh &