2x SBR16-1000mm Albero di guida Silde per guida lineare con 4x cuscinetto a blocco SBR16UU CC
4Pcs SBR16UU Bearing Blocks. 2Pcs SBR16-1000mm Fully Supported Linear Rails. Aluminum support rail with pre-drilled holes for ease of mounting. The shaft is case hardened. So make sure what you buy is case hardened.