[Unica] Knob Piece (Pan Head) (M4/25mm/Pan Head/Phillips/Iron Silver Plating, 200 pieces)

Stonework such as concrete, tiles, marble, blocks, etc., are prone to breaking or crumbling easily. Therefore, by combining plastic components like calblocks or anchors and driving screws or bolts, they can be securely fixed to prevent breakage. Non-Prepfix has developed a special screw thread shape that can withstand strong tensile strength without the need to combine calblocks or anchors, allowing for easy, fast, and powerful fixation by simply driving the screws.