... alloy manual,electric,remote control anti-weather anti-thelf 1,Structure of roller shutter.(1) End Cap, (2) Bearing Bracket (3) Ball ... , Performance date:3, Widely used to family, school, garage/balcony of villa, factory and shops etc.4, customized size as need ... guarantee. 50N.m standard.; 50N.m it's comebine one of manual and electric. 12, function: insulated, anti-bad weather, safe ...