1-1/2" Weldable Shaft Collar One-Piece Split Clamp-Type, Steel1018 Steel for ease and safety for welding Smooth bore protects shafts from damage Superior holding power over set screw type collars Made from 1018 steel, Weldable Shaft Collars are lead free to make welding to components easier and safer. 1 Piece Clamp Type Shaft Collars are designed for use on standard round shafts, hard or soft, as well as on thin wall tube or over a split hub. They are precision machined, non marring, easy to adjust, with high