4pcs door latch automatic door lock exterior door lock window latches spring lock bolts black aluminum band screws

the set includes 4 pieces door lock with 16 pieces fixing screws. material high quality aluminum alloy material, thickened base, anti rust and anti breakage, safe and reliable . size the total size of the automatic door lock is about 57mm x 43.7mm, color is black the screw size is 16 x 4 mm. feature