S&G Tool Aid 23500, 20 Piece Back Probe Kit$31.95PriceQuantity*Add to CartBuy NowUse to back probe harness connectors, fuel injectors and automotive sensorsStraight, 45 degree & 90 degree stainless steel probes in .027" and .040" diameters12" Extension leadsReturn & Refund Policy30 Day Return, RMA Required.10% Restock Fee.