Size: 98 x 65 x 40mm, Material: stainless steel case, copper key. No Drilling: No need to drill the holes, before installation, use the Allen key to loosen the screws.< /p> 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. Wide Application: These locks are perfect for single family homes, apartment doors, office doors and hotel bathroom hallway applications. Tips: This lock is suitable for frameless glass doors and tempered glass doors with a thickness of 10~12mm.