this can be a variation of your counter sunk screw head, however the less than area of The pinnacle is curved, just like a bugle. This decreases harm to plasterboard cutting down tearing on the paper, so is often https://types.blog/types-of-screw-heads/
New Step by Step Map For types of screw heads
Internet 52 days ago albiepwgg984155Web Directory Categories
Web Directory Search
New Site Listings