high quality and testing is fine Item 
100% like the picture shown 
Flat mounting 9v battery case for active pickup guitar&bass. 
Easy access for replacement. 
Dimension: 50mm (L) x 31.5mm (W)x56.5mm(H) 
Material: ABS 
Color: Black 
With 4pcs Screws,  NO metal contacts, Battery are not included 

Package Included: 
1X Battery holders (Battery not included)