KS Stainless steel do-it-yourself Tube, Straight, Diameter 20mm, 200mm Long This tube is made for DYI made exhaust system, you can use silver solder or teflon/silicone to hold the parts together. Tube diameter is 20mm, and the extended part is perfectly cover the insert of 20mm. so you can insert the tube into tube easily. Very precise part, made in Germany |