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Universal Extra Dimensions (UEDs) with compactification radius near the TeVscale provide interesting phenomenology at future colliders. The collidersignals of the first Kaluza-Klein (KK) level are very similar to those of asupersymmetric model with a nearly degenerate superpartner spectrum. Theheavier first level KK states cascade decay to the lightest KK particles (LKP),which is neutral and stable because of KK-parity. The signatures involvemissing energy and relatively soft jets and leptons which can be difficult fordetection. The KK electron signal in $e^- e^-$ collisions is free from theproblematic two photon background therefore provides a unique opportunity for adetailed studies of the KK electrons in the Universal Extra Dimension scenario.Comment: 10 pages, talk presented at the e-e-01 workshop, University of  California, Santa Cruz, Dec.7-9, 200

Universal Extra Dimensions at the e- e- Colliders

Universal Extra Dimensions at the e^- e^- Colliders