Boring Head Chandler Duplex w/ R-8 Shank K-244. Boring Head Chandler Duplex w/ R-8 Shank. Listing and template services provided by inkFrog. The item "Boring Head Chandler Duplex with R-8 Shank K-244" is in sale since Thursday, November 11, 2021. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Other CNC, Metalworking & Manufacturing". The seller is "j-sag" and is located in Bay Shore, New York. This item can be shipped to United States.