(1) NEW - Techspray 1823-100F No-Clean, Size#4 Desoldering Braid - 100' Feet (Techspray "Blue"). Techspray No-Clean Braid 4 Desoldering Braid, ESD-Safe, #4 (Blue. Desoldering braid or desoldering wick is a pre-fluxed copper braid that is used to remove solder, which allows components to be replaced and excess solder (e.g. bridging) to be removed. ).