JESSIN shank adapters suit for most models of current prevailing rock drill machines and come in a full range of industry-standard thread configurations. At same time,ensure a quality drill string interface to the most exacting industry tolerances. Built to seamlessly interface with hydraulic and pneumatic drifters and top hammers, JESSIN shank adapters precision grinding process ensures straightness, fully carburized with an advanced heat treatment and CNC process ensure them with superior toughness and anti-fatigue strength to meet the most demanding drilling conditions. . Different shank adapters are available, like Atlas Copco, Tamrock, Ingersoll Rand,etc. Also for the same drill machine, due to different applications, the shank adapters can be different length and different threads. (1)Thread Type: R28, R32, R38, T38, T45, T51, GT60 (2) Suitable for rock drills made by BoartLongyear, Atlas Copco, Bohler, Furukawa, Gardner Denver, Holman, Ingersoll Rand, Joy, Le Roi, Montabert, Mitsui, Seco/Secan, Secoma, Tamrock, Tokyo Riuki, Toyo (3) Diameter: 37.8, 38, 44.3, 44.8, 44.9, 45, 51.7, 51.9, 54, 55.5, 57, 57.8, 60, 65, 68, 69, 74.9, 79mm (4) Length: 245-880mm (5)Package: in wooden case or in bundles. Atlas Copco (BBC 43/44/45/100,BBC 51/52/54/120,BBE57,COP125/130/131;COP1032HD, COP1032/1036/1038HB,COP1038HD/1238,COP1038HL; COP1238,COP1432/1532/1440/1838HD/1838ME;COP1550/1838ME/1838HE; COP1550EX/1838EX; COP1840HE/1850;COP2150/2550;COP2160/2560; COP4050EX;COP4050MUX, etc)