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Down-the-hole drill bit - DURAWING 90
The Durawing 90 is an overburden drilling system manufactured by Everdigm. Featuring an IR3.5 hammer, it has a diameter of 101 mm, a length of 411 mm, a system open of 125 mm, and a casing size of 115 mm. In addition, it has an integrated internal air blow that protects against jamming and a special sliding mechanism that allows perfect workability.