Source Four PAR MCM Cool White BlackAll the power of a PAR plus the cool beam of the Source Four! This is no ordinary par can. Source Four PARs go beyond run of the mill pars with ETC rugged, die cast aluminium construction and acclaimed Source Four lighting technology, making it a great addition to your stage lighting. MCM stands for Metal Cold Mirror. This unique reflector coating ensures that only light, not heat, goes out of the front of the fixture making the Source Four PAR MCM