This 12x 40mm heatsink kit includes aluminum cooler heatsinks and 3M 8810 thermal conductive adhesive tape for efficient cooling in computer components and parts. The product dimensions are 1.57"L x 1.57"W x 0.43"H, and the item weight is 17 grams. The kit is not discontinued and originates from China. Ideal for use in fans, heat sinks, and cooling systems, this heatsink kit provides reliable thermal management solutions for various electronic devices.