Liaocheng Jinquan Construction Machinery Co.,Ltd is selling this:

Other T45 threaded button bits from China T45 89mm semi-

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T45 89mm Rock drill button bits' body is made of high quality imported special steel 45CrNiMoV, the cutting head is made of special alloy YK05 after special processing.
Jinquan's tungsten carbide buttons are with superior wear resistance and impact toughness superior, with higher drilling speed compared with the similar rock drilling tools. Rock button drill bits series tools’ passivation time is longer, approximate 5-6 times of the other drill bits. This is beneficial to save the auxiliary working hours, reduce manual labor and accelerate the construction speed.
T45 flat face retrac button bits own following characteristics:
Thread button bit size available: 76mm, 89mm, 102mm;
Thread button bit skirt available: regular skirt; retract skirt;
Thread button bit face available: falt face; drop center face;
Thread button bit button shape available: (hemi) spherical; ballstic; conical.