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Sprocket material: Cr-Mo steel, heat treated (hardened and double tempered). Spacer rings material: 6061-T6 aluminium. Spacer ring set: 4 x 3 mm, 1 x 5 mm, 2 x 10 mm. Sprocket dimensions: 1/2 inch x 3/32 inch.
Sprocket material: Cr-Mo steel, heat treated (hardened and double tempered). Spacer rings material: 6061-T6 aluminium. Spacer ring set: 4 x 3 mm, 1 x 5 mm, 2 x 10 mm. Sprocket dimensions: 1/2 inch x 3/32 inch.