Outperform and outlast traditional standard pitch models. Bi-metal construction with teeth made from specially hardened type M3 high speed steel. The varying teeth height and gullet sizes result in much faster cutting and longer life. For wood; mild, tool and stainless steels; cast iron; brass and aluminum. 51 sizes from 9/16 in (14mm) to 6 in (152mm).

RIDGID® Hole Saw, Variable Pitch, 1-1/6 in Diameter, 1-1/2 in Cutting Depth, 3/5 TPI, M3 High Speed Steel Cutting Edge, Use Arbor: R0/R1/R5, Applicable Materials: Wood, Stainless Steel, Cast Iron, Brass and Aluminum

• Bi-metal construction
• 3/5 TPI variable pitch
• Positive tooth rake
• 310 rpm steel, 155 rpm stainless steel, 210 rpm cast iron, 420 rpm brass and 465 rpm aluminum
• Note: Use RIDGID® thread cutting oil on all metal except cast iron
• Model: M27

• https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_f46eba2ef71a9145cecf1bb47e052b7873d005de71622f88a1e184340fcda903.pdf https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/IDW_DOCUMENT_f46eba2ef71a9145cecf1bb47e052b7873d005de71622f88a1e184340fcda903.pdf