Features an 18 tooth, 3 retaining bar system, paired with a positive swing-through action, built-in back-loading for fast cuffing, heavy-duty construction with oversized rivet heads for added strength and side double locks with two standard keys included with each pair. Now you can color code your handcuffs & legcuffs and never lose another set again. It also makes for easy classification and identification for prisoners. Blue, Purple and Green are special orders - call for availability.