Idler Sprocket 10 tooth 410, 415, 43, # 41, # 40 or 420 3/8" ID 34-810 - 13-736

Sprocket Idler 10 tooth 1/2" x 1/8" with a 3/8" ID. 

Works with: 
410   Chain 1/2" x 1/8"
# 43  Chain 1/2" x 1/8"
# 65  Chain 1/2" x 1/8"
410H Chain 1/2" x 1/8"  (has 20% thicker plates and pins) 
415 Chain 1/2" x 3/16"
415H Chain 1/2" x 3/16"  (has 20% thicker plates and pins)
# 41 Chain 1/2" x 1/4"
# 40 Chain 1/2" x 5/16"
420 Chain

Ref. # 34-810 & 13-736