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638 Dim. is + .005; 750 Dim. is + .005-.000.
Unit of Measure

Specifications

Number of Teeth_SYN

 N/A 18

Chain Number_SYN

 N/A 40

Outside Diameter_SYN

 N/A 3.140 in

Bore Diameter_SYN

 N/A 0.638 in

Length Through Bore_SYN

 N/A 0.720 in

Tooth Width_SYN

 N/A 0.284 in

Weight_SYN

 N/A 0.530 lb

Hardened Teeth_SYN

 N/A Yes

UPC Code

 N/A 097039905291