These single clip together 18650 cell spacers are ideal for bespoke battery packs creating better thermal management by allowing adequate air flow to each cells. 

They can be clipped together to create an unlimited size battery pack and are the ideal accessory for DIY'ers pack builders. 

Dimensions:

Outer: L20.2mm x W20.2mm

Internal diameter: 18.4mm

Height: 8mm

Quantity: 20 pc