Specification:<br />Product name: 20mm Copper Base PCB<br />Base Metal type: copper<br />Direct Thermal Path:yes<br />Copper Base Size: 20mm (diameter)<br />Suitable for:XHP50,XHP70,can also used on CREE XM-L,CREE XM-L2 LED and MKR MKR2<br /><br />Package included:<br />1 x 20mm Copper Base PCB