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Manufacturer : Proto
Box End Thickness : 1-11/16 in
Box End Width : 4-3/4 in
Brand Name : Proto®
Country Of Origin : US
Finish/coating : Black Oxide
Standards : ASME B107.100
Product Status : Active
- For use on extra large fasteners
- Forged heads with machined openings
- 12 point box end allows for fine indexing, helping to improve speed and access
- Fits 4, 6 and 12 point fasteners
- Box end is countersunk for easy application to the fastener


