I-Drill Collar yakhiwe ngensimbi ye-AISI 4145H elungisiwe ecishiwe futhi eqinile futhi iphathwa ngokushisa ngobude bayo bonke ukuze iqine futhi iqine. Ukuhlolwa okuqinile kwe-metallurgical kwenziwa ngokucaciswa ngakunye ukuze kuqinisekiswe ukuthi ukwelashwa kokushisa kukhiqiza ubulukhuni obungaguquki nobuphezulu ngokujula kwebha.
I-Landrill ehlinzeka ngamakholomu okubhoboza asezingeni futhi asontekile ukusuka ku-3-1/8” OD kufika ku-14” OD ngokuvumelana ne-API, NS-1 noma i-DS-1.