YXPOLYER Super Tough Easy Print Nylon Filament,1.75mm 3D Printer Engineering Filament, Strong, Heat Resistant, Corrosion Resistance, Good Abrasion and Good Aging, 1kg Spool (2.2lbs), Black - Newegg.com
PLA Pro Plus 3D Printer Filament Engineering Grade - Gizmo Dorks
Introducing new engineering-grade metal filament Ultrafuse 316L: now available from Sculpteo | Sculpteo Blog
Amazon.com: iSANGHU Carbon Fiber ASA Filament 1.75mm, Black ASA 3D Printer Filament with UV/Rain/Heat Resistant, Engineering 3D Printing Filament, Perfect for Printing Outdoor Functional Parts, 1kg Spool, Black : Industrial & Scientific
U3DPS | BASF Ultrafuse ABS Fusion+ Filament - Natural– Ultimate 3D Printing Store