CARBURETTOR REBUILD KIT TO FIT THE FOLLOWING ZAMA CARBURETTORS:- C1Q-S154 , C1Q-S155 , C1Q-S156 , C1Q-S161 , C1Q-S162 FITTED TO STIHL FS450 MACHINES AMONGST OTHERS GND-98 KIT (REPLACES RB-172, RB-171 , RB-170 , RB-169).FIRST CLASS QUALITY NON OEM PARTS SUPPLIED AS PICTURED FREE STANDARD UK SHIPPING.ANY QUESTIONS PLEASE FEEL FREE TO ASK THANKS FOR LOOKING