Model: L7T. Replace for L7T, BM6A, BPMR7A, RCJ6Y, RCJ7Y, WSR5F. For Stihl TS400 TS410 TS420 TS460 And 017 018 021 023 025 MS180 MS170 MS210 MS230 MS250 Chainsaw;. 10 Spark Plugs. Compatible with the following models, but not limited.