Car-O-Liner Company welding technician Jeff Coppes introduces the New CTR7™ Resistance Spot Welder at SEMA 2015 in Las Vegas. Car-O-Liner continues its quest to create the very best products for vehicle collision repair. CTR7™ provides quality spot welds with all the new high-strength steels using cutting edge inverter technology. A wide range of accessories and sophisticated software with semi-automatic control features guarantee perfect welding results.