Helical Products (Santa Maria, CA) offers miniature couplings, u-joints, and machined springs with integrated attachment components. The line includes couplings with an unlimited variety of customized ends. All of these products utilize the HELI-CAL® Flexure. The configuration of attachments can vary from plain bore to pinion gear. These flexured couplings and u-joints are backlash-free and provide constant velocity rotation regardless of misalignment. With proper attachment, the devices may minimize assembly production time, and reduce the total number of parts purchased, inventoried, or assembled.