Seger Looper Threader Works With All Babylock Sergers B8200-04B Go to amazon.com Related posts Check expert advices for serger looper? FeatureSerger Looper Threader Threading WireWorks On ALL Baby Lock Sergers. BLE8, Evolve, BLE3ATW, BLE3ATW-2 Enlighten. DescriptionSerger Looper Threader Threading Wire. Works On ALL Baby Lock Sergers. BLE8, Evolve, BLE3ATW, BLE3ATW-2 Enlighten. B8200-04B