This is a ball lock , made of durable stainless steel material, sturdy and practical, and can be used for a long time. The design is reasonable, sensitive and efficient, very for in the family bathroom, bedroom, etc. This is a very good home knob door lock, which will meet your needs very well. -Color:Silver.-Material:Stainless Steel, Copper.-Size: About18.00X7.50X7.50cm/ 7.07X2.95X2.95inch.-Center distance: 60mm.-The spherical lock is made of stainless steel, which is firm and durable.-It has a wide range of applications and is very for in family bathrooms, bedrooms, study rooms, etc.-Made with craftsmanship, smooth and bright, providing you with a comfortable touching.-The structure is simple, the is convenient, and it can be easily applied. It will be your good choice for door locks.-The structure is reasonable, safe and flexible, the knob rotates smoothly, and the use is more convenient. : 1 x spherical lock (with key)