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VIDEOHeavy-Section Self-Drilling Screw with Spiral Flutes for 25mm steel plateHeavy-Section Self-Drilling Screw with Spiral Flutes for 25mm steel plate
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VIDEOBimetal screw drilling 2+3mm steel plate in 3 secondsBimetal screw drilling 2+3mm steel plate in 3 seconds
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VIDEOPenestrating test for 5.5x25 screws from China factoryPenestrating test for 5.5x25 screws from China factory
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VIDEOPenestrating test for self-drilling screws 5.5x20 , average 2.5 secondsPenestrating test for self-drilling screws 5.5x20 , average 2.5 seconds
