I work in the autobody industry. This is a seam sealer tip that replicates factory seam sealer bead texture in the structural portions of a car. : r/functionalprint
3M™ Automix Heavy-Bodied Seam Sealer 08308
1K Seam Sealers | sealers | SEM Products
Eastwood Autobody Seam Sealer Cartridge Black
Resto Tech: How To Apply Seam Sealer Correctly!
CARWORX 135.695 Brushable Seam Sealer (1L) - National Autobody Wholesalers
SMR-26 Beige Fast Setting Auto Body Seam Sealer - Speedokote LLC
3M UltraPro Urethane Seam Sealer White 310ML - Automotive and Industrial Supply