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Rayson SR395W Plastic Spiral Coil Binding 3/8 Inch, 3 1 Pitch White Coil Binding Ring,
Binding Capacity up to 50 sheets ( 80g 20lb) Length About 11.3” (36 Loops) 100 per box, Color Black. This spiral binding coil can not used with 4 1 pitch binding machine. 3 1 Coil binding ring means per inch has 3 holes (This is very important distinguish 3 1 from 4 1 cause the things to be as different. 4 1 means per inch has 4 holes. They are used with different binding machine.) 3 1 pitch spiral binding coils great for reports and presentations with any 3 1 pitch coil binding machine. Manufacturer RAY

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Price: $20.99