3.1mm to 1.0mm DC Converter Adapter Plug Set of 5 wuernine Outer Diameter 5.5mm Inner Diameter 2.1mm Female to Outer Diameter 3.1mm Inner Diameter 1.0mm Male Power Supply Conversion *Free shipping!✨ *Instant purchase OK◎ *First come, first served for single items. *For bulk purchases, please comment in advance. #Tommy's product list is here ✨☜ #Tommy's charging cables list is here ✨☜ ✳ There were no noticeable stains on the product, but there may be oversights. ✳ Please check the condition of the product in the photos, and purchase with understanding of home storage and simple packaging for shipping. ✳ Opened for inspection 24-50