2pcs 9.7mm Brazed Diamond Core Drills for Extension Holes M14 thread
$16.25
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Quantity: 2pcs Specificiation: Dia 10mm, M14 connection , with water slot Application: Dry/Wet drilling for granite & marble, concrete, ceramic The drills used for loaded back bolt stone extention holes, make the back bolt holes which bigger insider. Feature: 1.Fast and Smooth drilling, 2.Long lifetime ,Less Chipping 3.Minimizing any breakage 4.Less loss of material 5.Less heat generation 6.Better finish quality
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