ITEM NAME:3/8"-8 Tooth Chain Rim Sprocket fit for Husqvarna 394 395 Stihl 064 066 Chainsaw 3/8" 8 Tooth 7 Spline Sprocket Rim Replacement Fit for Husqvarna 394 395 Stihl 064 066 Chainsaw SPECIFICATIONS.(Fit for Husqvarna 394 395 Chainsaw. Fit for Stihl 064 066 088 090 MS660 MS880 Chainsaw. Model: 3/8" Pitch, 8 Tooth, 7 Spline. Item included: 1 x Rim Sprocket. 1) 8 tooth 3/8" pitch with 7 spline hole.