binifiMux 220pcs M4 Flat Head Black Screw Nuts Kit, M4 x 6mm/ 10mm/ 12mm/ 16mm/ 18mm/ 20mm sold2025 yellow is the one with

yellow is the one with the lightest load

Safety coupler pin has 1

Fits most hand drills

Convenient expanding and exact expanding result

Single Cut

binifiMux 220pcs M4 Flat Head Black Screw Nuts Kit, M4 x 6mm/ 10mm/ 12mm/ 16mm/ 18mm/ 20mm sold2025 yellow is the one withbinifiMux 220pcs M4 Flat Head Black Screw Nuts Kit, M4 x 6mm 10mm 12mm 16mm 18mm 20mm [Package details:] M4x6mm 20pcs M4x10mm 20pcs M4x12mm 20pcs M4x16mm 20pcs M4x18mm 20pcs M4x20mm 20pcs M4 Hex Nuts 100pcs [About Countersunk Screws:] The countersunk screws are mostly used in places where the surface of the parts cannot be raised after installation. The parts to be fastened are thick and thin. The so called thick, that is, the thickness of the parts