China Bt30-Er16-60 Bt30-Er16-100 Toolholder for CNC Milling Machince 100% No-Rust 0.002mm, Find details about China Bt Tool Holder, Er16 Tool Holder from Bt30-Er16-60 Bt30-Er16-100 Toolholder for CNC Milling Machince 100% No-Rust 0.002mm