This universal mount battery box for Antigravity 12 and 16 cell lithium ion batteries is machined from 6061 aluminum. Mounts anywhere you choose using the supplied 1/4"-20 flathead screws. Assembled dimensions with 12 cell battery are approximately 4-7/8 long by 3-1/2" wide and 4" tall, and including the battery (not included) weighs just about 2-1/2 pounds. Assembled dimensions with 16 cell battery are approximately 4-1/2" long by 3" wide and 5" tall, and including the battery (not included) weighs just about 3-1/2 pounds. Made in the USA.