STURDY CONSTRUCTION - Constructed with copper core and stainless steel strike plate, these ball door catches are sturdy, not easily worn and rusted, and will not deform or break even after long-term and frequent use. ADJUSTABLE DESIGN - The roller door catch can be flexibly adjusted, you can adjust the distance between the magnet and the strike plate by rotating the locking buckle of the main body to adapt to different door thickness, and can rotate the tail to control the compression of the spring to adjust the closing tension, suitable for various installation needs. SMOOTH & QUIET - The spring-loaded ball bearing delivers smooth and silent closing performance. Our door ball latches avoid loud slamming and provide gentle, stable operation, bringing a quiet and comfortable living environment for daily use. EASY INSTALLATION - Each door catch for internal doors features simple structure, allowing quick and easy installation. They are widely used for internal doors, kitchen cabinets, closet doors, wardrobe doors and more, ideal for home, office, and hotel. PACKAGE CONTENTS - Including 8 pieces of adjustable roller ball door catches and 32 mounting screws in this pack, meeting your home needs. Main body measures 53 x 26 x 27 mm, and mounting plate measures 35 x 54 mm., Manufacturer: SEUNMUK