Check out popular add ons that you may require for your installation 
PTFE Gas Tape  
Green Fibre Washers  
Gas Conversion Label  
 
ANY GAS WORK SHOULD BE CARRIED OUT BY A GAS SAFE REGISTERED ENGINEER 
There is a +/- tolerance of 0.07mm allowed on jet sizes
Standard M6 x 0,75 thread, height 9mm, diameter 7mm across the flat
Will work for Propane G30, Butane G31, Calor
These jets will fit all recent cookers /hobs including
AEG, Ariston, Baumatic, Beko, Bosch, Candy, Cannon, Creda, Electrolux, Gorenje,
Hotpoint, Indesit, Siemens, Stoves, New World, Zannusi, Vitralux, Whirlpool, etc.