3 1/4″ (83mm) (3.125″) Engine Cylinder Flex-Hone for all engine applications utilizing a 2.950″ to 3.290″ or 75mm to 85mm bore.240 GRIT Brand new sealed in package engine cylinder flex-hone is for 2.950″ to 3.290″ cylinder Bores. Designed to work with cylinder bores from 2.950″ to 3.290″. Perfect for all engine types and block materials. Made in USA by the one of the best cylinder hone manufacturers, FLEX-HONE. 240 grit, EXCELLENT for re-ringing jobs or final bore Tool is labeled as 3.250″ diameter (83mm) but is actually slightly larger to apply the required wall force on a 3 1/4″ cylinder bore Tool is self centering and is easy to use Tool can be used with a 3/8″ or 1/2″ chuck portable drill or drill pressThis patented Flex-Hone is the best way to create a Cross Hatch surface finish with suspended globule working abrasives. Contact us for more information as we use this hone on all of our race motors. Most of the engine hone articles reference this exact brand and type of tool. THIS TOOL HAS THE 13 1/2″ LONG SHAFT for engine rebuilding. ITEM IS BRAND NEW NEVER REMOVED FROM FACTORY PACKING,240 grit is our top seller.SEE OUR EBAY STORE FOR HONING OIL, CYLINDER CLEANING BRUSHES OR MORE HONE SIZES..Buyer to pay shipping determined in shipping tab, will combine orders, will ship internationalSEE OUR OTHER AUCTIONS FOR race car oil filter wrenches for removing oil filters with cars with headers, or trickle chargers for full charge keep it on all year long with no worries