Made of aluminum alloy with anodizing surface, corrosion proof and durable. We offer 3 kinds of heat sink: One is a non adhesive stick itemOne is an ordinary self adhesive modelThe other is with conductive thermal pads for Raspberry Pi Those sizes of 14x14mm(L*W) and 9x9mm(L*W) are special for RPI or the computer's chip component. for Electronics Component Small sizes heatsinks can be applied on 3D printers, IC chipset, the electronic, RAM, the computer's chip component heat dissipation or anywhere you need an efficient heatsink. for LED Large sizes heatsinks can be applied to devices to cool LED and the power, etc.. for SSD Those aluminum heatsink can achieve dual heat dissipation with the silicone conductive pad. Cooling Fit for M.2 2280 SSD, SM951, SM961, 950PRO, XP941, etc. Non Stick Model This heatsink comes without any thermal tape or adhesive tape. Ordinary Self Adhesive Type This type of heatsink comes with ordinary self adhesive, easy to use, strong stickiness. CONDUCTIVE Self Adhesive Heatsink This heatsink comes with CONDUCTIVE self adhesive, it is more faster to release heat and with strong stickiness. UXCELL_MRO Uxcell MRO is short for Maintenance, Repair, and Operations, which includes spare parts, consumable products, and activities completed to restore or maintain the functioning of needed equipment. We provide more than 100 thousand MRO products.We specialize in MRO product techniques, have served customers from more than 50 countries and build a positive business reputation among them. UXCELL Uxcell is professional electrical parts manufacturing and sales supplier for more than ten years. Manufactured in compliance with American standards, ISO, German standards, Japanese standards, etc. Buying Options Buying Options Buying Options Buying Options Buying Options Shape E Shape E Shape Slot Shape Slot Shape E Shape