Review on Holikme 30-Piece Drill Brush Attachments Set with Scrub Pads Sponge - Power Scrubber Brush for Grout, Tiles, Sinks, Bathtub, Bathroom, Kitchen, Automobile - Long Extendable Attachment for All-purpose Cleaning by Amanda Schnurr

DAMN! (pun intended) If you're wondering if you should buy this, JUST. TO BUY. THE. I was skeptical at first because the reviews said "bristles fall apart". I don't know what they used it for but I went to town on the shower floor and the brush is like new. Abrasive pads are excellent for removing mineral deposits/stains caused by hard water. I washed the toilet shown in the photo once for almost 15 minutes with the stain still standing (and this is a stain that looks suspiciously like more than just mineral deposits). The combination of brush and grinding wheel removes all these stains and builds up in 5 minutes maximum.