★ Battery Type: for CR2032 (battery is not included here), ideal accessory for DIY Arduino project or other electrical board.
★ Material: plastic and metal.
★ CR2032 Vertical Button Cell Holder Size: 23.1 x 22 mm / 0.91" x 0.87" (D * H); CR2032 Horizontal Button Cell Holder Size: 20 x 12 mm / 0.8" x 0.47" (D * H); 6V Switch Battery Holder Size: 2.0" x 0.9" x 0.2"/ 5.2cm x 2.3cm x 0.6cm(L*W*H) .
★ Pin Number: 2 & 3.
★ Package contents: 20 pieces CR2032 vertical button cell holder; Pack of 20 horizontal button battery holders; 10 pieces 6V switch battery holder.