(1) Female Luxury Stainless Steel Neck-Wrist-Ankle Restraints with Locks.
The maximal inside diameter of the wrist-cuffs is 5.6 cm = 2.32". The maximal inside diameter of the ankle-cuffs is 7.9 cm = 3.11". The inside diameter of the neck collar is 12.0 cm = 4.72", the rod diameter (thickness) is 1.1 cm=0.43".
(2) The weight of this item is approximately 2020 g = 4.45 lbs