STIHL compatible brushcutter chainsaw blower hedge trimmer starter pulley Outer diameter (mm): 60 Inner diameter (mm): 10.6 for models: STIHL 017, 018, 019 T, 020, 021, 023, 025, BG 45, BG 46, BG 55, BG 65, BG 85, BR 45 C, BT 45, HS 45, HS 46, HS 81, HS 82, HS 86 R, HS 87 R, MS 170, MS 180, MS 171, MS 181, MS 190, MS 190 T, MS 192, MS 192 T, MS 193, MS 193 T, MS 200, MS 201, MS 210, MS 211, MS 230, MS 250, SH 55, SH 85 Part No: 40271189 Original part number: 1123 195 0400