The BID machine (Bobbins Injection Dyeing Machine) can handle any type of yarn wound on any type of dye house support, from cylindrical to conical. It injects four colours simultaneously from the pumping station equipped with cylinders in AISI 316 stainless steel. The autoclave is constructed with AISI 304 with a indirect steam coil to avoid the effect of yellowing on the yarn. The machine is designed to work at high temperature and under vacuum. The Vacuum pump is fed by water. In addition the Bid is supplied with full automatic colour kitchen with 4 tanks and number one or number two printing heads. The machine has 4 colours injections by 16 needles. Other features of the Bid include a perfect repeatability of the lot and the shade. The safety valve was tested according to the directives CE PED.