Weller wbts electric screwdrivers with lever start weller t0053909599 the weller wbts series of electric screwdrivers is ideal for assembly work requiring low torque values they are ideal for precision electronics work for example transformers pcbs housing parts delicate equipment etc a choice of analogue or digital psucontrollers is available weller t0053909599 wbts 35ecl electric screwdriver