SMAKN&reg; Hard Plastic Battery Holder w Pins for 4 x 18650 Li-ion Batteries Product Name : Battery Holder w Pins;Fit for : 4 x 18650 Rechargeable Li-ion Battery(Not included here) Material : Hard Plastic, Metal;Color : Black Size : 78 x 79 x 25mm/3.1" x 3.1" x 1"(L*W*H) Weight : 30g Package Content : 1 x 18650 Battery Holder w Pins