Restraint Charm Bracelet (Staple Stud Variant, 50mm, BLK+Z) For Sale at Restraint Charm Bracelet (Staple Stud Variant, 50mm, BLK+Z) For Sale at Restraint Charm Bracelet (30mm, ALE+DZ) For Sale at 1stDibs Restraint Charm Bracelet (50mm, ALE+KZ) For Sale at 1stDibs. Restraint Charm Bracelet (30mm, BLK+MR) from Parts of Four. Restraint Items with the potential use as restraints. All P4X hardware and accessories are compatible and interchangeable. Charm System The Charm System is an interrelated group of products that can be mixed and matched or worn individually. BLK: Black Buffalo leather. MR: Matte Brass. Matte Brass Dimensions: Bracelet width: 30 mm U bolt (HxW): 35 mm 23 mm Weight: 44 grams (size M) Made in Bali SKU: 712 2 BLK+MR