Check the listing for details. Performance Tool W80577 - COMPRESSION TESTER SPARK PLUG ADAPTER SET. Condition: New. Listed at 18.99 USD. *************************** Performance Tool W80577 - COMPRESSION TESTER SPARK PLUG ADAPTER SET - Sizes: 10mm x 1.0, 12mm x 1.25, 18mm x 1.5 and the special 16mm x 1.5 Ford adapter. - Kit contains the necessary sizes to test compression most gas engines. - Snowmobiles, motorcycles, outboards, lawn equipment and much more. - Rubber O-rings insure a positive seal and accurate readings. - Fits our compression tester W80579 and others with a 14mm x 1.25 male thread. Brand New and Never Been Used! Still in Original Packaging. WE SHIP WORLDWIDE! FREE SHIPPING in the USA! CBM TOOLS SHIPS THE DAY YOUR ORDER IS CONFIRMED! Handling Time is 1 Business Day of receiving your payment. Actual shipping time varies depending upon your location. We ship from Oregon and QUALITY IS GUARANTEED! We here at CBM TOOLS strive to provide 5-STAR Service every day. Your personal satisfaction is guaranteed on all products we sell. Visit our E-Bay Store for more, GREAT PRODUCTS @ GREAT PRICES!