A POLISHING APPARATUS

摘要

Polishing picks (10) and polishing apparatus (20) using the picks that is suitable for polishing concrete and other hard surfaces. The picks have a cylindrical shank (11), for receipt within a bore (23) of the polishing apparatus and a polishing substrate (13) at the other end of the shank. The picks include a securing means (14, 15, 16) that is adapted to secure or retain the shank in an axial direction in the bore while allowing free rotation of the shank relative to the bore. The securing means includes a longitudinally split (17) sleeve (14) disposed about the shank that expands in the bore to frictionally engage the bore while allowing the shank to freely rotate relative to the sleeve.