Fielect 20Pcs 2x4 Cell Spacer 18650 Lithium Battery Holder Bracket for DIY Battery Pack 18.4mm Hole Dia

Crack resistant edge with the slot, with the firm, It can accomodate various size. It can withstand high drop, high strength support, easy to heat dissipation, convenient combination, fixed specifications, and free combination. With professional battery holder to replace the traditional general adhesive, which would brings convenient combination and more firm connection, as well as brings convenient maintenance of the battery.its the best choice of the battery combination.