Martin 80B16 Welded B Sprocket Bored to Size 80 / 1" B Hub 16 Teeth New no box. May have light rust and scuffs etc from being in storage. B Style sprockets are flat sprockets with a hub extension welded on one side. These plain bore sprockets can easily be bored to a metric or standard size to fit your application. Keyways, set screws and hardened teeth are quick alterations that can be made. Tolerances meet or exceed ANSI standards Manufactured of high carbon steel Precise machining and processes ensure consistent finish and high quality Bores are concentric to pitch line, minimizing run out Specifications Chain number pitch: 80 / 1 in Caliper diameter: 4.5008 in Hub style: B Pitch diameter: 5.1258 in Number of teeth: 16 Maximum bore diameter: 2.75 in Bore type: Bored to Size Tooth width: 0.575 in Bore diameter: 1.0000 in Storage dimension height: 1.5625 in Number of strands across: 1 Storage dimension length: 5.75 in Material: Steel Storage dimension width: 5.75 in Number of hubs: 1 Standards met: ANSI Length through bore: 1.5000 in Surface treatment: Protective Coating Hardened teeth: Non-Hardened Teeth Manufacturer upc number: 697950020150 Pitch type: Single Hub diameter: 4.0000 in Weight: 6 lbs Outside diameter: 5.627 in