Battery holder brackets are made of ABS plastic, suitable for DIY cylindrical battery combination, also important parts of maintaining the batteries.
Hole Diameter 18.4mm/0.72 inch; Hole Distance 20.2mm/0.79 inch; Size 21.7mm x 21.7mm x 8.9mm/ 0.85 inch x 0.85 inch x 0.35 inch(L*W*H); Color Black.
With slots at the edge, all brackets can be joined together without other tools, match up firm, with strong.
There are slots at side for joint, you can them according to your requirement.
Please check the size before you purchase. All above sizes are measured manually, please allow +/-0.1 inch error.