Outer Ring Diameter: 17mm/0.67"(appr.)
Inner Ring Diameter: 10mm/0.39"(appr.)
Package included: 1000Pcs Battery Insulators Adhesive Paper (Battery not included)
2 Sheets included, 100 insulators adhesive paper rings per sheet, total is 200 rings
Adhesive cardboard paper for 18650 battery insulator.
Better protection to avoid short circuit on batteries.
Easy peel and stick application.
1000 x Battery Insulators Adhesive Paper