This is the TQ Wire Sensor Cable (100mm).
TQ BL sensor cables are made from high quality silicone insulated wire and tube. These units are extremely soft and flexible. They will not tweak 12th scale or 10th scale pan cars. The silicone wires are burn resistant and crimped at the insulation (not just the conductor) for greater durability. Length is measured between the connectors.
Great for all applications but you must have these if you're running a pan car!