ITEM NAME:Clutch Drum & Sprocket Rim 3/8-7 Needle Bearing fit for Stihl 066 MS660 064 Hf Clutch Drum & Sprocket Rim 3/8-7 & Needle Bearing Fit for Stihl 066 MS660 064 Chainsaw SPECIFICATIONS.(1 x Needle BearingCompatible With: fit for Stihl 066 MS660 064 Chainsaw. 1 x 3/8"-7 Sprocket Rim. 1 x Clutch Drum. 2) Perfect match for the original one. Manufacture Part Number: 1122 160 2900, 9512 003 3281.