Reliance Electronics supplies Steel Band Corrosive Bullet Proof Patka. Reliance Electronics is an ISO 9001:2000 certified company. Steel Band Corrosive Bullet Proof Patka is used for soldiers and army officers. Steel Band Corrosive Bullet Proof Patka weight is approximately 1.4 kg to 1.7 kg. The bullet proof patka has an add on for ear & neck protection against 9 mm and 17 grain steel fragments of bomb and artillery shells, as also against all kinds of improvised explosive devices [IED].