3M 08978 Air Tool Scraper, Stiff, 4 In, Carbon Steel AX43 Hydraulic Fluid Shape Straight Type Hydraulic Fluid Shape Straight Type Adapter Cam and Groove Component Plug Flow Control Open Connection Style Cam and Groove Male × Threaded Female Coupling Size 3 Plug OD 3 5 8" Pipe Size 3 Thread Type NPT Dash Size 48 Material 316 Stainless Steel Maximum Pressure 200 psi @ 72° F Temperature Range 65° to 250° F Length 2 27 32" Compatible With Andrews Designed to dress fine grit (320 and finer) resin and vitrified bond diamond and cubic boron nitride (CBN) grinding wheels If you are looking for an efficient tool to help you get rid of unwanted materials on surfaces The stiff blade provides firm control for this scraper which measures 8 in