boart longyear drill bit, boart longyear drill bit ...
Number of buttons: 3,4,5,6,7,8,9 etc Delivery time:within 10-15 days as per your order quantity Our button bits are available in a wide range of sizes and styles to suit the most demanding drilling applications. They accommodate all of the most common thread or taper types and are available with parabolic or hemispherical buttons.
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