Aluminum set identifies common belts, fittings, pipe threads and spark plugs with USS or metric threads
USS sizes from #5 to 3/4" and thread pitch of 10" threads per inch (TPI) to 44 TPI
Metric sizes from 2.5mm to 22mm and pitch of .45mm to 2.5mm
Spark plug thread sizes 10mm to 18mm
Return Policy *
30-Day Risk FREE return for refund or replacement
If you are not 100% satisfied with your returnable items, return the product for a refund.
* Applies to all purchases made on MatcoTools.com excluding Toolboxes, Tool Carts, Diagnostics and shipped items weighing more than 150 pounds; Excludes all Gifts and Branded Apparel items except branded apparel size exchanges for exact items. See your Authorized Matco Tools distributor for warranty or return information on purchases made offline.