Strong Solid Plastic PP3 9 Volt  Battery Snaps.

With 150mm Red & Black PVC covered wires emerging at one end.

Fits 6LF22, LS9V, GP1604G-C1, 6LR6, MN1604, 6LP3146, 1604AU, CRV9, KF00492, 6LR61 and many more  batteries