SHIPS FREE IN CONTINENTAL USA ONLY LISLE TOOLS 12230 OXYGEN SENSOR THREAD CHASER & 12100 OXYGEN SENSOR SOCKET NEWFrom mfg: 12100: Removes and installs oxygen sensors on most domestic and some importsSpecial 22 mm socket with cutaway slot to provide clearance for wire harnessProvides adequate depth to fit over sensorHeat-treated alloy steelUse with 3/8″ square drive or 1″ wrench12230:Cleans Threads in Oxygen Sensor HolesUse with 3/4″ hex socket or 3/8″ square driveSize: M18x1.5 Also works on M18x1.5 spark plug threads. IMPORTANT: Use anti-seize WELCOME TO MARRS! 5580 COMMANDER DR. ARLINGTON, TN. 38002 WE ARE A BUSINESS WITH BRICK & MORTAR RETAIL AS WELL AS ONLINE SALES. WE HAVE BEEN IN BUSINESS OVER 60 YEARS. WE DO NOT TAKE GENERAL RETURNS, HOWEVER, WE WILL ALWAYS TAKE CARE OF ANY ITEM THAT IS DEFECTIVE OR IS NOT AS DESCRIBED AT NO COST TO OUR BUYER. YOU CAN REQUEST A RETURN FOR OTHER REASONS AND WE WILL DO OUR BEST TO WORK WITH YOU. ALL ITEMS OVER $150.00 WILL REQUIRE A SIGNATURE AT DELIVERY. PURCHASES IN THE STATE OF TENNESSEE WILL BE SUBJECT TO 9.75% SALES TAX. PAYPAL IS THE ONLY FORM OF PAYMENT WE ACCEPT.