Specification Model No. Special Aluminium alloy manometer 1019 Nylon cuff with D-ring(The stethoscope head is fixed to cuff) 1353N-A 2-tube adult size PVC bladder 1222-A Standard PVC bulb 144 Large Air-release valve with spring 1527 Taper end valve 1554 Single head stethoscope HS-30A Large vinyl zipper bag 113L