Key Locking Insert: Extra Heavy Wall, 4 Keys, 1"-12 Int Thrd Sz, 1 1/2"-12 Ext Thrd Sz, Plain, 10 PK [PK/10] Model: 217-077543

Key Locking Insert: Thin Wall, 2 Keys, 1/4"-20 Int Thrd Sz, 3/8"-16 Ext Thrd Sz, Plain, Plain, 10 PK [PK/10] Model: 215-066322

Key Locking Insert: Thin Wall, 2 Keys, 4-40 Int Thrd Sz, 10-32 Ext Thrd Sz, Stainless Steel, 10 PK [PK/10] Model: 217-076284

Key Locking Insert: Heavy Wall, 4 Keys, 3/4"-10 Int Thrd Sz, 1 1/8"-12 Ext Thrd Sz, Steel, 10 PK [PK/10] Model: 215-065909