Size: OD: 3 1/8" ~~11" ; ID: 1 1/2" Min. Length:10'~~31'

Elevator groove and slip groove made on box thread face of slick drill collar or spiral drill collar can be used as lifting sub and safety slip when trip out.

Hardbanding is optional at customers' requests.

 

More details of products,you are welcome to contact us by mail,thanks!