18 Pcs Bore Brush Drill Set, Mixiflor Twisted Stainless Steel Brass Nylon Bore Brush for Cleaning Rust, 1/4 Inch Hex Shank, with Handle, Extension Bar, Tool Bag

I bought the set for some engine work I was doing on my snowmobile. Good little set, seems like decent quality for the money. I was happy with it for what I needed it for.

I finally got around to using these brushes and they are a bunch of junk. I was using them on my grill to clean out old grease and gunk fromBetween the grooves on the griddle. 3 broke off at bottom of the brush 3 more the brush got so small you could not use them

They wear out fast

Don't put too much pressure on assembly because I broke one on first use with a rotary tool. Twisted wire broke off flush with bit but I was putting alot of pressure on it to try and remove rust. Light pressure seems alright.

Bought this set to remove carbon buildup in an automotive manifold. After not much use, many of the metal bristles became loose from the brushes and fell out. I even broke one of the brush stems and i don’t think i was working the brush hard.