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hi i have a 114mm hole saw with arbor for sale on ebay perfect for adding 12cm fans to a case

link 114mm HSS BI-METAL HOLE SAW WITH ARBOR on eBay (end time 24-Jan-10 12:45:31 GMT)

please let me now if you visit it and are considering buying it thanks

What chuck size is it 3/8 or 1/2 inch?

its 7/16 Hex Shank

Ok thanks.