Features:<br />- 20 pairs 1/3&amp;quot; ultra thin precision steel parallel set.<br />- Each parallel is 1/32&amp;quot; thick x 6&amp;quot; long without any holes on the body.<br />- Within 0.0001&amp;quot; in parallelism.<br />- Madehigh quality tool steel- stress relieved against distortion， precision ground and hardened.<br />- Come with a plastic case for storage.<br /><br />Specifications:<br />Material: 45 # steel<br />Model: ZT04-09<br />Color:Silver<br />Size: 1/32&amp;quot; thick x 6&amp;quot;long<br />Size Range: 1/2 - 1-11/16&amp;quot; by 1/16&amp;quot; intervals1/2，9/16，5/8，11/16，3/4，13/16，7/8，15/16，1，1-1/16，1-1/8，1-3/16，1-1/4，1-5/16，1-3/8，1-7/16，1-1/2，1-9/16，1-5/8，1-11/16<br />Parallelism: /- 0.0001&amp;quot;<br />Matched pair height: /- 0.0001&amp;quot;<br />Hardness: 50 HRc<br />Case size: 25x18x7cm/9.84x7.08x2.75 inch<br /><br />Packaged included:<br />20 pairs ultra thin precision steel parallel<br />1x Plastic case