08A-1X15T pilot bore sprocket, 1/2" x 5/16" pitch, material is C45 steel, pitch dia is 61.09mm and outer dia is 65.50mm
the pilot bore size is 10mm, tooth width is 7.2mm
hardness is HRC40±5
the weight for per piece is 0.14kgs
surface treatment is nature colour , we can do blacken, zinc plated and so on.