This 510-T Atomizer is manufactured by Royal Smokers

Currently available in black only.  Some atomizers will have 510-T printed on them and some will have Royal Smokers printed on them (See images). 

510-T Atomizers are compatible with any 510/510-T Battery, but must be used with 510-T Cartridges (5 Pack) - Soft Gasket or Joyetech 510-T Cartridges (5 Pack) - Hard Gasket Clear.

Price is for one atomizer.