Soporte Bateria Pila 18650 Pack 20 Unidades10pcs 3x Cell 18650 Battery Spacer Plastic Battery Radiating Shell Storage Holder Bracket 6x2x0.8cmRadiating during high rate discharge, extend battery lifeEvery spacer has slots on edge for connectionMakes your battery pack Solid and ReliableEvery 3pcs 18650 battery cells needs 2 Spacers (one up/ one down)Material: PlasticSize: approx. 6 x 2 x 0.8cm/2.36" x 0.79" x 0.31"Color: Black