Bag of 10 x Genuine Stihl Washers for HSE42, HSE52 Hedge Trimmer Part number : 4237-958-0500. Suitable for the Following Applications: HSE 42, HSE 52, HS 81 R, HS 81 RC, HS 81 T, HS 81 TC, HS 86 R, HS 86 T, HS 46, HS 46 C, HS 56 C, HS 81 R, HS 81 RC, HS 81 T, HS 81 TC, HS 86 R, HS 86 T Please check photos and part numbers to ensure this is the required part as I am unable to accept returns due to incorrectly ordered items. Listed at a great price with free postage. Any questions just ask.