Specifications:Calorific value :6Edge six-party :19Length of thread :9.5Thread diameter :14 L6 Spark Plugs for NGK BM6A L7T BPMR7A RCJ6Y RCJ7Y WSR5F Trimmer Blower Chainsaw STIHL TS400 TS410 TS420 TS460 and 017 018 021 Torch L6 replacement spark plugs :Autolite 235Autolite 254Autolite 255Bosch WKA145T3Bosch WKA175T3Bosch WS7EBosch WS8EBrisk P17Denso W20M-USNGK BM6ASpark Plug Replace For L7T BM6A BPMR7A RCJ6Y RCJ7Y WSR5F M7 CJ8 1560 Chainsaw Gas ScooterL6 REPLACES Champion CJ8, 843 Spark Plug Replaces NGK BM6A, 5921; Bosch WS8E 7543Spark Plug BM6A FITS 47CC - 49CC 50CC ETC 2 STROKE ENGINES ENGINESSpark Plug for Stihl Chainsaw 009 010 011 015 019T 020 020T 021 023 024 025 026 028 031 032 034 036 038 040 041 042aveq 044 045AVE Super 046 048 051 056 064 066 076 084 088Spark Plug for Stihl Chainsaw MS170 MS180 MS191T MS192T MS200 MS200T MS210 MS230 MS250 MS260 MS261 MS270 MS271 MS280 MS290 MS291 MS310 MS311 MS341 MS360 MS361 MS362 MS390 MS391 MS440 MS441 MS460 MS461 MS650 MS660 MS880 Please note: due to production series, the detailed colors may vary, but the performance is the same.