Another item from Billet Proof's “Builders” line-up… Fits Antigravity Small Case 4 Cell batteries. Machined from 11 GA HRPO steel and shipped flat and unfinished. This battery box is intended for use with Small Case 4 cell batteries (AG401) using a leather belt or a Velcro strap to secure the battery to the box itself. Detailed instructions are included with kit. Designed to be easily bent by hand and welded. We offer this battery box in either blank or "Swiss." The ONLY special tool required is a welder. Don't have a welder? Let us do it for you for ONLY $10! Dimensions: (Assembled Battery Box) Internal: Length = 4-3/8" Width = 1-1/2" Overall: Length = 4-5/8" Width = 1-11/16" Height = 1-15/16" Finish: Uncoated Steel Design: "Swiss" Fitment: Antigravity Small Case 4 Cell (AG401) As well as any battery that fits within the listed dimensions.