Markforged Onyx and Carbon Fiber Spool Pack (10 Spools Onyx, 5 Spools Carbon Fiber)15 spools in total, consisting of 10 Markforged Onyx 800cc spools and 5 Markforged Carbon Fiber 150cc spools. By ordering this pack, you'll pay $3,735. 00 instead of $4,150. 00 for the materials. Are you 3D printing a lot? Let's talk about a stocking agreement. We can hold inventory for you and deliver on demand. You can either send us a note through this contact form or use the chat bot in the bottom right corner. Markforged Onyx is a micro carbon