Vintage Delta Rockwell DP-260 four-step motor pulley/sheave assembly for drill press or machine shop equipment applications. This is a cast aluminum stepped drive pulley with four progressively sized grooves designed for adjustable speed belt positioning. The casting and dimensions closely match known Delta Rockwell drill press pulleys used on mid-century shop machinery and related equipment.

The pulley measures approximately 5 1/8" at the largest diameter and features a 1/2" center bore extending approximately 2 3/8" deep. The interior casting appears to retain the “DP 260” marking associated with Delta Rockwell pulley assemblies. Constructed from cast aluminum with reinforced ribbing on the reverse side for rigidity while maintaining lighter weight.

An excellent original vintage machine shop component suitable for restoration, display, replacement use, or industrial décor.