Tape insulator in economy version, to mail on or to screw on, for electric fencing tapes of all types up to 40 mm width - safe stability in the WI 4000 insulator makes it possible to get the desired tape tension between the insulator - As a result of this there is neither abrasion of the tape nor wear through of the insulator. The tape will be fixed by each insulator. There is no possibility to pull through the tape.