Size: 10mm 13.5mm 16mm 17.5mm 19.5mm 21.5mm 23.5mm optionable The heat sink specially made for fixing laser modules. It can be flexibly adjusted. Rotation degree is 360 degrees all-around direction Details: The heat sink holder can help to cool the laser to prolong the working time of laser modules. It is a laser module holder and mount to fix the module.
