Model: A3K Chrome finish Number of teeth: 19T Compatible with 1/2" x 1/8" wide chain Standard ISO threading 1.37" New not boxed
Model: A8N Bronze finish Number of teeth: 16T Compatible with standard 1/2" x 3/32" narrow chain Standard ISO threading 1.37" Weight: 148 gr New in box
Model: SFS30 Outer Body Cog: Cold Forged Steel / Chrome Plated Inner Body: Cold Forged Steel / Chrome Plated Screw Cap: Steel / Chrome Plated Bearing: Loose Ball Number of teeth: 18T Compatible with 1/2" x 3/32" narrow chain Standard ISO threading 1.37" New in box
Model: A8N Silver finish Number of teeth: 16T Compatible with standard 1/2" x 3/32" narrow chain Standard ISO threading 1.37" Weight: 148 gr New in box
Model: A8K Bronze finish Number of teeth: 16T Compatible with 1/2" x 1/8" wide chain Standard ISO threading 1.37" Weight: 148 gr New in box