Blood Cardioplegia Delivery Set Safelifeline blood cardioplegia delivery set without heat exchanger is specially designed to deliver cardioplegia solution during cardiopulmonary bypass surgery. Consist of: Non-toxic medical grade P.V.C. tubing Double plastic spikes with white clamps Pump tubing 1/4x1/16 Pump tubing 1/8x1/16. E.T.O. sterile and pyrogen free.