Abstract: For pinning of drop wires for the mechanical drawing-in of warp threads, the keyholes thereof located at different distances from the thread eyes in two different types of drop wires must be aligned with one another for the reception of a pinning rod. Both types of drop wires are thus strung onto a lease rod which passes through the thread eyes of both types of drop wires, the lease rod having a T-shaped cross-section at one end segment and a rectangular cross-section at an opposite end segment with an intermediate gradual transition of increasing thickness of the T-crossbar portion of the T-shaped cross-section. The thread eye of one type drop wire has a cutout defining opposed projections engaging upper surfaces of the T-crossbar, and the drop wires of the other drop wire type which are not intended to be displaced have an upper thread eye portion which is of essentially the same size and shape as the rectangular-sectioned segment of the lease rod.