Features: Reducing bushing adapters are suitable for different size of grinding wheel and sanding wheel Multi-sizes adapters make using of for bench grinder variable and saving cost. Material: bearing steel is rust-prevention and durable. Easy and simple use kit. Dimension: 1,ID 1/2'x OD 5/8' x L1'; 2,ID 5/8'xOD 3/4' x L1'; 3,ID 3/4'x OD 1' x L1' Specifications: Material: bearing steel Size: 1,ID 1/2'x OD 5/8' x L1'; 2,ID 5/8'xOD 3/4' x L1'; 3,ID 3/4'x OD 1' x L1' Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you place order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 Set Reducing Bushing Adapters