Stihl Viking Blade.

Part number:- 6383-702-0100, 6383 702 0100, 63837020100.

Size - 21", 53cm 

Fits models

MB 4.0 R, MB 4.0 RT, MB 4.0 RTP, MB 4.0 RV, MB 4.1 RTP, MB4.0R, MB4.0RT, MB4.0RTP, MB4.0RV, MB4.1RTP, MB40R, MB40RT, MB40RTP, MB40RV, MB41RTP, RM 4.0 RT, RM 4.0 RTP, RM 4.0 RV, RM4.0RT, RM4.0RTP, RM4.0RV, RM40RT, RM40RTP, RM40RV

(Box SS1A)