Battery shrapnel AA or AAA battery spring positive and negative (11.5×11.28×0.3mm) (1 pair)

From the shop's description

Battery shrapnel AA or AAA battery spring positive and negative (11.5×11.28×0.3mm) (1 pair) Description: Product Name : Battery Spring and Plate Set; Fit for : AA, AAA Batteries; Plate Size : 11.5 x 11.28 x 0.3 MM (Length x Width x Thickness) Spring Length : 7 mm Color : Silver Tone