Finished Polished Stainless Steel Door Knob, Length : 30mm

Ah, I see. It seems like you're referring to a "SS thumbs knob." Without more context, it's a bit challenging to pinpoint exactly what you're asking about. However, "SS" could stand for "stainless steel," so perhaps you're asking for a description of a stainless steel thumbs knob.

In general, a thumbs knob could refer to a small, rounded knob or button that is designed to be easily manipulated with the thumb. It might be used as a control or adjustment mechanism on a device or piece of equipment. 

A stainless steel thumbs knob would likely be made of stainless steel material, which is known for its durability, corrosion resistance, and sleek appearance. It would typically have a smooth surface and a comfortable shape that allows for easy gripping and turning with the thumb.

If you have a specific product or context in mind, providing more details would help in giving a more accurate description.

Product size 19mm X 25mm .

product finish - matte finish.

bolt size 4mm foot fitting.

heavy thread and best quality inish