Check the listing for details. 8-1/4" Quick Acting Clamp Type Knurling Tools with CNC Lathe Shank 1-1/2 - 4-1/2. Condition: New. Listed at 52.99 USD. Benefits:Fast set-upKnurling pattern is clean and sharp, with no double trackingFeatures:Knurling pressures absorbed by knurling toolKnurl patterns: straight (2 knurls AA) diamond, male (1 knurl BL, 1 knurl BR)No pressure on lathe, compound, centers or feed screwKnurls included: 1 set (1 knurl BL and 1 knurl BR) medium pitch, diamond patternThese knurling tools fit regular toolposts and square toolpost turrets of any lathes including CNC lathes and chuckers. Since knurling pressure is absorbed between the two knurls there is no pressure on the lathe, compound, centers or cross feed screw. Depth of knurling can be pre-set for production work before start of operation. Knurling pattern is clear and sharp. Easily removable pins make it simple to change knurls. Furnished with one set of medium diamond pattern knurls but can be used with any other knurls. Knurl dimensions : ¾” Dia. x 3/8” Width x ¼” Bore. For Use on Work Diameter From: 1-1/2 - 4-1/2Total Length of Tool: 8-1/4"Shank Size: 5/8 x 5/8