These size “AA” and reliable contacts are ideal for molded cases with self-contained battery compartments. 0.3 mm thick metal plate with nickel-plated finish. Designed for AA Type Cell battery /holder/case/box/enclosure. These 1.0 mm thick Snap-In clips are perfect for enclosure with 1.00mm gaps, plus you can bend the unique design 7.0 mm Via-clips to the back to prevent vibration and be more secure. The dimension between the “Negative Spring and the Positive Dimple” is 15.5 mm, this is a good distance to have your enclosure design with a 1.00 mm wall between batteries. The via-clip of positive and negative contacts can be wire lead to be soldered with power wires, for a good soldered result please apply soldering paste. The Battery Holder up in the picture isn't included in this purchase. Technical Data: Product: Battery Contacts Battery Cell Size: AA Material: 0.3mm steel film with nickel-plated finish. Package: Anti-static shielding plastic bag. Package Size: 110x100x12mm. Shipping Weight: 12.50g. UPC: 766133582898 SKU: ZW-65NO-MEE9 ASIN: B09TDFX6RT Package Content: . 3 * Positive contacts . 3 * Negative contacts . 3 * Positive-negative bipolar contacts . 3 * Negative-positive bipolar contacts