Killer Kabs are made of Finlandic Birch , loaded with G12-70 Celestions , create massive amounts of bottom end. The cabinets are covered with Black Tolex and have recessed handles and stackable corners. Metal mesh grills protect the Celestion speakers. Killer Kabs are available in two configurations , 4/12 or 2/12 with either METALTRONIX or BLUES 59 logo panels.