It is press-in expansion type
Brass Inserts Press Lock Type Brass Inserts insert
designed for use in Thermoplastic molding.it
requires vary low screws installation torque and
has self-locking action Brass Inserts Press Lock
Type Brass Inserts Tappex Emhart type Injection
Moulding Inserts injection Molding inserts Insert
Molding insert Moulding.