These are the 9x40mm Drive Shafts for the HPI E10 Cars. FEATURES: Steel construction, black in color YOU WILL RECEIVE: Two driveshafts REQUIREMENTS: Installation on the E10 SPECIFICATIONS: Length: 1.92" (49mm) Ball diameter: .35" (9mm) Shaft diameter: .23" (6mm) tlw 1/10/08 ir/jxs &