Tool parts is used for superior pen
Material:copper,chrome plating
Hinge:component of the assembles,uesd as the base of the LCDMONTIOR;
Material:Iron and Plastic
Rivet:used for LCDTV
Material:6061-T6aluminium
Size:different sizes,about twenty
Type:two(one with tooth,another with six angles.
Length and top circle are different