Features: 1) Shank adaptors made by Boart Longyear and other manufacturers2) Suitable for rock drills made by Boart Longyear, Atlas Copco, Bohler, Furukawa, Gardner Denver, Holman, Ingersoll Rand, Joy, Le Roi, Montabert, Mitsui, Seco/Secan, Secoma, Tamrock, Tokyo Riuki, Toyo3) Thread: R32, R38, T38, T45, T514) 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, 79mm5) Length: 245-880mm producing area:China