Photo 1 of uxcell M4x20mm Knurled Thumb Screws, 5pcs 304 Stainless Steel Flat Knurled Head Thumb Screws Bolts with Shoulder Grip Knobs Fasteners

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Photo 1 of uxcell M4x20mm Knurled Thumb Screws, 5pcs 304 Stainless Steel Flat Knurled Head Thumb Screws Bolts with Shoulder Grip Knobs FastenersPhoto 2 of uxcell M4x20mm Knurled Thumb Screws, 5pcs 304 Stainless Steel Flat Knurled Head Thumb Screws Bolts with Shoulder Grip Knobs Fasteners