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H

High calorie

Higher heat than soldering iron tips of the same geometric size

J

Extended curved cone shape

Extended type>10mmDifferent axes,cone

L

Long lifespan

Thick coating

N

Non-wetting

One or more surfaces are free from tin

P

high-power

Shorten the length, <6.5mm

Q

square

Square end face

R

Elongated curved shape

Extended type>10mmnon-coaxial

S

Standard type

T

cone

cone

U

Circular end face

V

Concave shape

W

Expand the tin coated area

X

high-power&Long lifespan

Shorten the length, <6.5mm,Thick coating