The brush bundle comes with all 3 types of replacement brushes.
Each griller has their own style, why should cleaning be any different? Get all three and SAVE!
NYLON - soft for coated grill grates, non scratch.
BRASS - gentle enough that it won’t scratch most grills.
STAINLESS STEEL - our strongest option for a deep robust clean.
It did a great job cleaning the grill. 2 of 3 brushes came off per instructions, quite easily. The third is stuck and I suspect the shaft is defective. Email and call to GrillBot went unanswered so far...I hope I didn't just waste a bunch of money to get a single good grill-cleaning! I can't use it the way it is.