Foundation drill attachment TH28

Teamwhole take pride in being the only manufacturers in China that have a diverse line of DTH bit that range from 3" to 47"(76mm-1200mm) in diameter with most the leading hammer shanks. Made from high quality alloy steel and advanced heat-treatment,Teamwhole bits are ensureed extreme protection against wear and fatigue.They're also available in four different bit head face designs,include Flat,Concave,Convex and Drop Center.And two different carbide shapes,spherical and ballistic to tackle any challenge and rock formations. APPLICATION For water well,depep hole well,oil and gas open hole drilling For foundation and piling drilling