Specification model:

T10 [dedicated for M3 with holes]]

T15 [dedicated for M3.5 with holes]]

T20 [dedicated for M4 with holes]]

T25 [dedicated for M5 with holes]]

T30 [special for M6 with holes]]

T6 [dedicated for solid M2]]

T8 [dedicated for solid M2.5]]

T10 [dedicated for solid M3]]

T15 [dedicated for solid M3.5]]

T20 [dedicated for solid M4]]

T25 [dedicated for solid M5]]

T30 [dedicated for solid M6]]