How to Clean Reusable Electrodes EL120 Ag-AgCl Electrode, Reusable, with contact posts for hair EL254 Ag-AgCl Electrode, Reusable, Small, 4 mm - Unshielded EL254RT Ag-AgCl Electrode, Reusable, Small, 4 mm - Radiotranslucent EL254S Ag-AgCl Electrode, Reusable, Small, 4 mm - Shielded EL258 Ag-AgCl Electrode, Reusable, General-purpose, 8 mm - Unshielded EL258H Ag-AgCl Electrode, Reusable, General-purpose, 8 mm - Low-profile (hole) EL258RT Ag-AgCl Electrode, Reusable, General-purpose, 8 mm - Radiotranslucent EL258S Ag-AgCl Electrode, Reusable, General-purpose, 8 mm - Shielded EL350 Bar Lead Electrode (Concave) EL350S Bar Lead Electrode, Shielded (Concave) EL351 Bar Lead Electrode (Convex) HSTM01 Handheld Human-safe Stimulation Electrode (BSL, for Stimulator) TSD203 Electrodermal Response Electrode Set Same Day Shipping Orders with UPS Red or Blue shipping will be shipped on the same day (based on available stock) if received by 2 p.m. PT (Monday-Friday).