The Varian Turbo-V1000A V1000 turbo molecular high vacuum pumps have a pumping speed of 1000 liters per second (l/s). The Varian Turbo-V1000A V1000 turbo molecular pump inlet is Conflat CFF 10 inch with a ISO KF-40 exhaust forevacuum foreline flange. The Varian Turbo-V1000A V1000 turbomolecular pump can be used for all general-purpose high vacuum applications. (Controller and cables not included but available.) Comes with instruction manual. These Varian Turbo-V1000A V1000 turbo pumps are excellent rebuilt high vacuum pumps and have been fully tested.