Specification:
--8 Types of AA and AAA Battery Holders: 1 aa battery holder, 2 aa battery holder, 3 aa battery holder, 4 aa battery holder, 1 aaa battery holder, 2 aaa battery holder, 3 aaa battery holder, 4 aaa battery holder
--AA Holder Dimensions(L*W*H): 1 aa battery holder: 2.248" x 0.669" x 0.539"/5.71cm x 1.70cm x 1.37cm; 2 aa battery holder: 2.303" x 1.276" x 0.575"/5.85cm x 3.24cm x 1.46cm; 3 aa battery holder: 2.287" x 1.906" x 0.567"/5.81cm x 4.84cm x 1.44cm; 4 aa battery holder: 2.248" x 2.457" x 0.622"/5.71cm x 6.23cm x 1.58cm
--AAA Holder Dimensions(L*W*H): 1 aaa battery holder: 2.047" x 0.519" x 0.476"/5.20cm x 1.32cm x 1.21cm; 2 aaa battery holder: 2.082" x 0.948" x 0.516"/5.29cm x 2.41cm x 1.31cm; 3 aaa battery holder: 2.039" x 1.276" x 0.575"/5.18cm x 3.62cm x 1.30cm; 4 aaa battery holder: 2.091" x 1.976" x 0.484"/5.31cm x 5.02cm x 1.23cm
--Battery Holder Leads: all aa and aaa battery case holder with leads, they are tinned wire end
--Wires Length: 5.9"/15cm
--Wires Diameter(count in the PVC isolation around the wire): 0.0393"/1mm
--Cable Color: red and black
--Material: plastic ABS
--AA Holder Weight: single aa battery holder: 0.141oz/4g; 2 aa battery holder: 0.247oz/7g; 3 cell aa battery holder: 0.388oz/11g; 4 cell aa battery holder: 0.459oz/13g
--AAA Holder Weight: single aaa battery holder: 0.106oz/3g; 2 aaa battery holder: 0.176oz/5g; 3 aaa battery holder: 0.247oz/7g; 4 cell aaa battery holder: 0.317oz/9g
--No ON/OFF Switch and Cover on the Battery Holder!

Package Contents:
1x 1 aa battery holder
1x 2 aa battery holder
1x 3 aa battery holder
1x 4 aa battery holder
1x 1 aaa battery holder
1x 2 aaa battery holder
1x 3 aaa battery holder
1x 4 aaa battery holder