HSS drills made of high-performance work steel especially for working with particularly hard tropical wood. Depending on the diameter, for pre-drilling the concealed attachment, as a replacement drill bit for the professional countersink or for pre-drilling the wood for the post base.
|3 mm Ø||pilot hole for BioMaderas Clips|
|4 mm Ø||Pilot hole for decking screws in softwood|
|4,5 mm Ø||Replacement drill bit for professional countersinks, pre-drilling for decking screws in hardwood|
|6 mm Ø||Pilot hole for post base|