Uxcell a16050300ux0511 Knurled Thumb Nuts M3 Carbon steel Knurled Thumb Nuts 20 Pcs for 3D Printer Heated Bed<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Thread size: M3/0.12"; product Name: knurled thumb nuts</li><li>Material: Carbon steel; weight: 48G</li><li>Package Content: 20 x knurled thumb nuts; main Color: Silver tone</li><li>Pitch: 0.5mm; total size: 11 x 6mm/0.43" x 0.24" (d*h)</li><li>Coating: galvanized/zinc plated</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51r6kP4KvmL.jpg" noproxy>