Stainless Steel, One 链轮 strand Finished Bore sprockets – No. 25, 35, 40, 50 and 60.
Complete With Any kind of Bore Size Indicated 
– Standard Directly Keyway and Two Setscrews
*1/4″ and 3/8″ Bore sizes possess two set screws only – No Keyway
stainless steel sprocket
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