18650 Battery Spacer: Mode: 2x5 Cell Spacer; For: 18650 Lithium Battery; Hole Spacing: 20.2mm; Hole Dia: 18.4mm High Quality:18650 Battery Spacer made of Fire Retardant PC PP Materials,Which Has Excellent Impact Resistance, Heat Resistance, Low Temperature Resistance, Chemical Resistance and Electrical Properties How to Work: Battery Holder 18650 Belong to Necessary Support of High-End Battery Combination, Can Withstand High Drop, High Strength Support, Easy to Heat Dissipation, Convenient Combination Easy to Use: 18650 Battery Holder Has Card Slot at Edge, the Same Model Multi -Shape Random Stitching Combination, Match Up Firm, With Strong, and No Need for Other Device Connected by Vibration Test,Very Convenient to Use Application:18650 Battery Holder Used to Replace the Traditional General Adhesive,Good for Battery Combination,Electric Tools Battery, Storage Battery and Electric Car Battery, DIY Battery Pack etc. 20pcs