Skip the messy compounds—these bobs come embedded with aluminum oxide, the most common abrasive material. Best for polishing steel, they’re also a good all-purpose option for other materials when specialty bobs aren’t available. Use them to polish small areas and hard-to-reach spots with a drill or grinder for bits and burs. Grit is approximate.

Keep a variety of rectangular sizes and grits on hand to polish flat surfaces with a reciprocating polisher—no messy compounds required. These bobs are embedded with silicon carbide abrasive, which stays cool to prevent buildup. That makes them best for soft metals prone to clogging, such as aluminum. The abrasive also lets you cut fast without pressing hard. Their flat profile suits both large surfaces and straight, narrow spaces. The bobs have a beveled tip to polish on an angle. Grit is approximate. Labels in the lid include our part numbers, so it's easy to replenish the assortments.

Pop these rectangular bobs onto a reciprocating polisher to glide along flat surfaces—no messy compounds required. They're embedded with silicon carbide abrasive, which stays cool to prevent buildup. That makes them best for soft metals prone to clogging, such as aluminum. The abrasive also lets you cut fast without pressing hard. Their flat profile suits both large surfaces and straight, narrow spaces. The bobs have a beveled tip to polish on an angle. Grit is approximate.

Polish delicate surfaces that are easily scratched, such as glass and ceramics, without messy compounds. These bobs are embedded with cerium oxide abrasive, which is less aggressive than other materials. They remove light scratches, scuffs, cloudy surfaces, and hard water etching. Polish small areas and hard-to-reach spots using a drill or grinder for bits and burs.