what is bristle diameter of smallest brush?

The bristles come in 10 different diameters

Will these work on the rim jet holes of a toilet?

Diameter wise probably so but they are pretty soft....

What is the largest & smallest diameters?

The maximum and minimum diameters are 1 in and 0.2 in, respectively

I need something think enough like these yet Do you make these in longer lengths and stronger bristles to clean deep bottles?

Deep bottles No, as these are only about 9 inches long, but there are ones longer. When I need to clean deep bottles I use a old fashioned baby bottle brush.

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✨ Clean Straws, Clear Conscience – Because Every Sip Deserves Perfection! 🥤

DURABLE SAFE BUILD - Food-grade 304 stainless steel wire resists rust and bends with ease.
SHARE THE CLEAN LIFESTYLE - Set of 10 brushes lets you keep extras at home, work, and gift to friends.
DEEP REACH SPOTLESS CLEAN - 8.2-inch length ensures every inch of your straw sparkles.
GENTLE YET EFFECTIVE BRISTLES - Soft nylon bristles scrub grime without scratching delicate silicone or glass.
PRECISION FIT FOR EVERY STRAW - 10 brush sizes from micro to wide fit all reusable straws flawlessly.

The DESIN Long Straw Brush set features 10 nylon brushes with diameters ranging from 1/16" to 1", each 8.2 inches long, crafted with flexible, food-grade 304 stainless steel handles. Designed for reusable straws of all materials—stainless steel, silicone, glass, and plastic—these durable brushes provide thorough cleaning even in hard-to-reach bends. The set’s variety and quality make it an essential, shareable tool for maintaining hygiene and sustainability in your daily hydration routine.

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