Includes (2) 04277 Lock Nuts. New, Bulk Packed. Genuine OEM replacement part. Consult owners manual for proper part number identification and proper installation. Compatible with: Ryobi : BC30 (RY30004) 30cc Brushcutter, BC30 (RY30004A) 30cc Brushcutter, RY30060A 30cc Brushcutter, RY30060B 30cc Brushcutter, BC30 (RY30061A) 30cc Brushcutter, RY30063 30cc Brushcutter, BC30 (RY30160) 30cc Brushcutter, RY30260 30cc Brushcutter, RY30260B 30cc Brushcutter, RY30564 30cc Brushcutter, RY30570 30cc String and Brushcutter, RY70105 Straight Shaft, RY70105A Straight Shaft, RY70107 Straight Shaft, RY70107A Straight Shaft, RY26540 Brush Cutter, RY26941 Brush Cutter, RY30060 30cc Brushcutter, RY15518 Edger Attachment, RY15702 Brushcutter Attachment, RY30963 30cc , RY30562 30cc , 51992 (260000001) , RY08420 /Vacuum, Homelite, B25S (UT-15182), UT15198 (BC1600), UT15512 (BCA250), EA250 (UT15513), BC3000 (UT-15099-R), BC800 (UT-15184), BC900 (UT-15166), BC900 (UT-15172), UT-70026, UT20711 (D825CA), D825CA (UT-20736), UT15165 (D825SB), UT15170 (D825SB), UT-20712 Expand-It 3 in 1 , UT-20710 Expand-it Plus , UT-20681 Expand-it , UT-20681-A Expand-it , UT-20735 Expand-it , F2040 (UT-20791) , F3040 (UT-15176) , F3050 (UT-15179) , UT15084B GSTBC , UT15084C GSTBC , HBC28 (UT-15096) , HBC28 (UT-15097) , HBC30 (UT-15071-1) , HBC30 (UT-15071-A) , HBC30 (UT-15085-A) , HBC30B (UT-15086-A) , HBC30B (UT-15086-A) , UT-50500 Edger, UT-50901 Edger, BC2500AZ (UT-15205), BC800 (UT-15183), UT-20581-3 (ST285BC) , UT-20581-C (ST285BC) , UT-20581-E (ST285BC) , UT-20598-1 (ST285BC) , UT-20615 (ST285BC) , UT15084 (GSTBC) , UT15084A (GSTBC) , UT15180 (K400) Zip Start, UT15181 (K400) Zip Start, UT15169 (Versa Tool) Zip Start, UT15518F Expand-It Edger Attachment, UT15702B Expand-It Brush Cutter, UT15121 (T30S) Gas, UT15164 (Versa Tool), UT70127 Straight Shaft, UT70127A Straight Shaft, UT70129 Straight Shaft, UT70129A Straight Shaft, UT70131 Straight Shaft, UT70131A Straight Shaft, ST385 (UT-15045) , ST385 (UT-15