SANTO Pressed steel Thread Protectors are made using 3 mm thick steel sheets, drawn to shape, precision machined and given a coat of rust preventive oil. Protectors are closed end having a drive in squares lot for ease of Makeup & Breakout. These protectors are of most robust construction and exceed the Impact resistance requirements of Thread Protection as stipulated under relevant API/Premium Standards / Specifications and are recommended for use in the extremely difficult handling and Storage Environment.