MB-3 AA battery holder and bottom plate only (no camera). For Nikon N2000/F-301. It is new in box never used. It will fit into a $5 Priority Flat Rate Box. Based on someone's E-Bay auction, this doubles the battery life of the camera by letting you use AA's instead of AAA's. Original price was $19.95, but make and offer and pay shipping and it's yours. I'll take checks (personal or cashier's) or U.S.P.S. Money Orders. No Pay Pal.