PSR Series Polished Sucker-Rod Protectors PSR Series polished sucker rod protectors provide excellent impact protection for high grade, polished stainless steel. The protectors screw on threaded ends for maximum retention and easy removal with socket tools or wrenches. Material: High-Density Polyethylene Color: Color coded by size SSR Series Sucker-Rod Protectors SSR Series sucker rod protectors feature a nonthreaded design and provide excellent impact security. The protectors are easily removed with socket tools or wrenches. Material: High-Density Polyethylene Color: Black Note: SR Series is still available. Please visit caplugs.com/pipeandflange to view our full line. HSR Series Hex Cap Sucker-Rod Protectors HSR Series hex cap sucker rod protectors feature a non-threaded design. These caps protect the threaded ends of the sucker rods and offer excellent impact protection. The hexagonal design allows for easy installation/removal with a standard socket or wrench. Material: High-density polyethylene Standard Color: Black 344 * For other material and color options, contact customer service.http://www.caplugs.com/pipeandflange