BOPS & Accessories Listings 13-5/8″ BOP TEST STUMP – New By admin 5 years ago BOP TEST STUMP: 13-5/8″ 10M FLANGED (BX-159) END X BLIND. COMPLETE W/ 4-1/2″ IF REMOVABLE TEST FIXTURE AND 1/2″ NPT TEST PORT. WELDED ONTO 1″ PLATE 5′ X 5′. NEW API W/ CERTS Continue Reading Previous 5” 19.50# S-135 c/w NC50 (4-1/2″ IF) Connection Used Premium Class Drill Pipe Range 2 – InspectedNext Emsco Style F-800 Mud Pumps – New Surplus