1-4500/5200 chain saw ignition coil 2-OEM accepted 3,high quality 1--chain saw ignition coil2-- 4500 5200 chainsaw ignition coil3-- we can supply many kinds ignition system for chain saw such as STL180,STIL 250,STIL 380 ,STL381 and HUS142 ,HUS137 ,HUS365 ,HUS372,HUS 268 ,HUS272XP show our factory: