Easycargo 40pcs 6 Sizes 20mm Copper Pad Shim Thermal Kit, Cooler Copper Pad heatsink for Cooling CPU GPU VGA RAM SSD NVMe M.2Includes 40pcs copper pad shim, low profile 20mm x 20mm / 0.8 x 0.8 inches, in 6 thicknesses.Includes 7pcs of these thicknesses: 0.3mm, 0.5mm, 0.8mm, 1mm.Includes 6pcs of these thicknesses: 1.2mm, 1.5mm