LED cylinder, used for LED panel, it has many kinds of specification, just as your need.

S: 10*18 the base diameter is 10MM, the whole hight is 18MM

M: 12*15 the base diameter is 12MM, the whole hight is 15MM

L: 14*13 the base diameter is 14MM, the whole hight is 13MM

The positive thead: 14*15+6. The base diameter is 14MM, the whole hight is 21MM, the positive

Thead is 6MM. M4 tapping.

PS: There are also other kinds of models, we 'll do our best to meet your need!