8Pcs M6 X 20Mm Knurled Clamping Knob, 304 Stainless Steel Thumb Screw Clamping K
8Pcs M6 X 20Mm Knurled Clamping Knob, 304 Stainless Steel Thumb Screw Clamping Knob round Hand Threaded Hand Bolt Stud Knob 18Mm Dia for Machinery. Thread Style Right Hand M6 x 20mm. Thread Size M6. Fastener Size M6 x 20mm.