Offer from LTH-Hanse: Description The SQQL silencers are made from a rectangular steel pipe, Which forms the outer jacket, as well as an inner perforated insert. The interior of the silencer is lined with sound-absorbing mineral wool filled with a thickness of 30 mm. We would be happy to create a personal offer for you on Ebay. Made in Germany You can find accessories items in our shop: spiral-seam pipe Nipple with lip seal Arc angle 90° sleeve Ventilation clamp Non-return valve