This item is for what use.

Features:

Material: PVC

Inner diameter: 0.71 in / 1.8 cm

Outer diameter: 1.02 in / 2.6 cm

Length: 2.48 in / 6.3 cm

Convert 18650 battery to 26650 battery

Nothing complicated, just stick the 18650 battery in the converter and it's the same as a 26650 battery

Perfect for electronics and emergency situations

NOTE:（battery is not included）

Item: 18650 to 26650 Battery Converter Case Sleeve Adapter White

Dimensions: =2.48 in x 1.02 in x 1.02 in (6.3 cm x 2.6 cm x 2.6 cm)

Weight: 0.25 oz (7 g)

Note: Lighting, display and other factors may cause COLOR SHADING, please comprehensive pictures and text descriptions to determine!

Package Includes                

● 2 x Battery adapter