Size: 98 x 65 x40 mm, Material: stainless steel body, copper keys No drilling: no need to drill holes, before installation, use the hex wrench to loosen the screws. Four-layer steel plate: The four-layer steel plate is combined with a ring lock, which is more complicated and stronger. Compared with a single thin ring lock, it is more practical and stronger. Wide Application: These locks are perfect for family home, flat door, office door and hotel bathroom applications. Tips: This lock is suitable for frameless glass doors and tempered glass doors with a thickness of 10~12mm. Size:Double Lock Features: No Drilling: No need to punch holes, before installation, use the hex wrench to loosen the screws. Four-layer Steel Plate: The four-layer steel plate is combined with a ring lock, which is more complicated and stronger. Compared with a single thin ring lock, it is more convenient and stronger. Thickened pads: Both sides in contact with the glass door are provided with pads to prevent