Size: 98 x 65 x 40 mm, Material: Stainless steel housing, copper key. No drilling required: Loosen the screws with an Allen key before installation. Four-layer steel plate: The four-layer steel plate is combined with a locking ring, which is more complex and stable. Compared with a lock with a thin ring, it is more practical and durable. Versatile use: These locks are perfect for single-family homes, apartment doors, office doors, and hotel bathrooms. Tips: This lock is suitable for frameless glass doors and tempered glass doors with a thickness of 8-12 mm. Material: Stainless steel housing, copper key. Size: approx. 9.8 x 6.5 cm.