step 13 步骤十三
18
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十
(ST1.5x4mm)
cross recessed round
head tapping screw
(M1.6x4mm)x2
Socket screw
十 (ST1.5X4 )
Phillips screws
十 (ST1.5X4 )
Socket screw
Socket screw
cross recessed round head
tapping screw
