Ballard Bolus Extension Set - Case of 5 BLD012312Cs Our Low Price:$67.50 In Basket: None With 2 port "Y" and clamp. For use with MIC–KEY Low Profile Gastrostomy Tubes. Features SECUR–LOK 'key' connection mechanism, clear tubing, individually packaged extension sets, tubing clamp. Non–sterile – Case of 5.