UEI Test Instruments Back Probe Test Lead Kit The ATLBPK Back Probe Test Lead Kit offers two fine tip needle probes with standard test lead extension wire. The fine tips give technicians the ability to back probe connectors, easily reach connectors on control devices, and test points located on circuit boards. The leads feature a standard 4mm banana jack that on the extension wire that will work with meters utilizing standard DMM test leads. Works with:DL369, DL379, DL379COMBO, DL379KIT, DL389, DL389COMBO, DL389KIT, DL49, DL99B, DM200, DM383B, DM384, DM391, DM393, DM397, DMEG3, IRT3, UTL2K, UTL260, UTL33T, MCP4, MCP9A We are a Factory Authorized Distributor for UEI Test Instruments. Call us today for all of your UEI Test Instruments and accessories needs.