This is the DuraTrax Kwik Pit Super Start with 360° Backplate. FEATURES: Backplate rotates 360° making the Kwik Pit Super Start a Universal electric starter for a wide variety of engines including; O.S. Max .21VG, 30VG Supertigre .27 DuraTrax Torq .21 & Velocity .15 & .17 Ofna Force .21, .25, .26, .27, .28 and .32 HPI Savage .21, .25, .28 Steel gear drive and ball-bearing drive train Powerful Ultra Torque 540 size motor Dust and impact resistant composite plastic case INCLUDES: DuraTrax Kwik Pit Super Start with 360° Backplate, Start Shaft and instruction manual REQUIRES: 6-cell stick battery pack: TOWC1050 Battery charger SPECS: Starting Unit Starting Shaft Length: 8.5" (216mm) Length: 7.2" (182mm) Width: 2" (52mm) Hex Size: 0.22" (5.5mm) Height: 3.5" (90mm) COMMENTS: 360° Backplate available separately (DTXP6034). jxs 4/13/07 ir/jxs updt jxs 10/10/11