Drill screws 4,2 x 13 mm with inner square drive are ideal for fitting of spiral ductwork. Further they don’t cause problems when using shrink tapes, as the screw head is free from sharp edges. A toothed underside ensures a secure fit. The matching conical holders are non-magnetic and as such, they do not pick up any drilling swarf. One holder is included with each pack
| Material: |
Galvanized
|
| Dimension: |
4,2 x 13 mm
|
