Specifications: I will package well and prot e ct your privacy 100% Best Workmanship. smooth and easy wear take off Heavy Weight, high quality Material: 304 stainless steel and strong magnet Color: silver Screw Type 30MM/1.18"=430/15.17oz, 40MM/1.57"=595g/20.99oz, 60MM/2.36"=850g/29.98oz