GREAT's High-quality Bits Series I

Popular Size: 1305, 1308,1613,1616,1913

Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples.

Steel body PDC bit is made by AISI 4145H heat treatment steel manufacture, it has lower cost compare with Matrix body PDC bit.

Overview Starry Sky Roller BitGREAT has customized manufacture 90 ° U-shaped Roller Bit, 120 ° U-shaped Roller Bit and Starry Sky Roller Bit.The Roller bit mainly used for Rock reamer (Hole opener) ...