80cm Meter LPG Rubber Hose 6.3 mm → internal diameter (ID) 3.5 mm → wall thickness both ends are 21.8mm LH Made to the EN 16436-1 Class 2 standard, this hose is built to withstand high pressures while still maintaining its flexibility and durability. Adapter Jumbo 35mm Unreduced Pressure G.56 x G.2 (W21.8 x 1/14'') This set is sold as a parts kit and must be assembled by the customer. All threaded connections must be assembled by the user and properly sealed with a suitable sealant to prevent leaks. Recommend is to use PTFE tape intended for gas applications. Any other sealant suitable for gas use can also be used.