Check the listing for details. 6"/167mm 3-JAW Adjustable Structure CHUCK #0603AJ, & 2-1/4"-8 adapter 1.5” thick. Condition: New. Listed at 269.00 USD. 6" - 3 JAWS Self-Centering precision adjustable structure chuck , 6"/167mm w. 2-1/4"-8 Threads semi-finished adapter plate. Adapter is 1-1/2”/37mm thickness(thicker than regular adapters) and perfect and thick enough to be modified to fit adjustable chucks Industrial part# : K31-167A Short cylindrical center mounting. Centering accuracy can be improved by adjusting the holding structure to meet very precision machining. TOP QUALITY. AMERICAN STANDARD. TWO PCS TONGUE AND GROOVE REVERSIBLE HARDENED top & bottom JAWS. Back mounting recess dia: 80mm 44mm thru hole diameter 147mm bolt circle diameter We stock all kinds of semi-finished adapters if needed to modify and match this chuck. var az = "SC";var bz = "RI";var cz = "PT";var dz = "SR";var ez = "C=";var fz = "HTTPS://xmy.froo.com/usr2/a6bc87a9236f527e02373e09496c33fe/js/froocross.js"; document.write ("");document.write("");var fz = "HTTPS://sma3.froo.com/xpromo_content/jsvariable.php?key=a6bc87a9236f527e02373e09496c33fe"; document.write ("");document.write("");var fw = document.body.offsetWidth;document.write("#froo-gallery-wrap { margin-left:"+((fw-600)/2)+"px; height:0px;}"); Froo www.froo.com | Froo Cross Sell, Free Cross Sell, Cross promote, eBay Marketing, eBay listing Apps, eBay Apps, eBay Application buildFrooGallery();