[Model] 900M-TI Outer Diameter: Approx. 6.7mm / 0.26 Inner Diameter: Approx. 4.0mm / 0.16 Length: Approx. 43cm / 16.93[Good quality material] This indicates high heat with high heat fast and 480 heat resistant for long time using. Yes, with good use of the tip of the iron, its lifespan can be reachedover 20,000 solder joints. [Features] This tip has the advantage of long service life and is not easy to rust, easy to install and use. [Applicable] This tip applies to soldering station 936, 937, etc.the microswitch would have detached from the small printed circuit board and the microswitch contacts are smaller than those of the microphones. Description: These iron tips are made of electrolytic iron and nickel which protect them from oxidation, characterized Heat resistant up to 480C and a service life of over 20,000 solder joints with proper use. Like the the tip is very sharp, it is suitable for manual finishing, for example for car problems, once micro the switch had popped out of the small printed circuit board, you noticed that the microswitch contacts are smaller than a micro (smaller than a pinhead) or solder in a very small space, also around the . to revise Tin bridge made of solder to the chip. How about get this set and do your soldering work work easier Specification: Material: Copper Color: Silver Coating: Iron and Nickel (Finish)Outer Diameter: Approx. 6.7mm / 0.26