1No More Waste: The 3D printer welder connector can connect disconnected and excess filament material to continue printing. 2Good Printing: The same filament of different colours can be connected to print out multi level models, very reliable. 3Wide Matching: Suits for most 75mm filaments, such as PLA, ABS, PETG, PC, PP, PVB, HIPS and so on, high in efficiency. 4Fine Material: Adopting premium aluminium alloy material with a sturdy structure, not easy to deform and also very durable. 5Easy to Install: Comes with a light weight and a compact size as well, the whole installation is very convenient to finish.