Bit Holders, Bits, Sockets manufacturer / supplier in China, offering Industrial Grade T Head Bolt DIN 188 SS304/SS316 Nibbed Design for T-Slot Rails, OEM Stainless Steel T Slot Bolt DIN 188 T Head Bolt with Double Nib, A2-70 Stainless Steel T Head Bolt with Nib DIN 188-2024 Standard Factory Supply and so on.