Listings Top Drives 30173887-500 IBOP – New Surplus By admin 2 years ago 30173887-500 OEM NOV VALVE,UPPER IBOP, PIPE HANDLER, FOR TDS 4S MFG: NOV VARCO (Tong marks are from original testing, Can reseal and test for additional cost) Continue Reading Previous Tesco 350 EXI 600 Top Drive – NEW SurplusNext Tesco 500 Ton HCI Top Drive Package – Used