Metal Vintil 20 K B (190-29) Gayo 21677 - 20 mm transition size and To the "K" type design Malik, from the bronze (br) It is a durable technical binder fittings. This model is mainly used to manage water, gas and other technical liquids and completely closing the flow. 190-29 It has a wide range of applications in both household and industrial systems with this scentil, firm body and leakage structure. This screw, which is stacking and high pressure, Long-term use is the ideal choice for. The Gayo 21677 model has a favorable structure for installation and meets the requirements of modern plumbing.