N-100 Handcuffs American Handcuff Company, formerly known as American Munitions, has decided to branch into the commercial market. These handcuffs represent their first attempt. They can be used for large-wristed people as well as a hobble. Motion is NOT limited to one plain, rather it is constrained to about 30 degrees of motion in the rotational plain as well as full motion in the hinge plain. Many police departments are unhappy with hinged cuffs due to this problem and these are designed to offer a third option - more secure than chain cuffs but less dangerous than fully hinged cuffs.
Motion is limited to one plane.
N-520 Handcuffs Oversized hinged handcuffs for those larger prisoners. These can also be used as extremely disabling leg irons. N-550 Handcuffs American Handcuff has done it again. The wrist openings are eliptically contoured to prevent slippage and rotation. The wrist openings are tilted for reduced pressure on to the wearer's wrists.