The Norms 12" Furniture Clamp with 5/8" Pin is a clamp with a baby pin slider. The steel build is durable and strong. Easy to open and close and suitable for "close quarters" clamping. The design is versatile and easy to use. Make rough adjustments by releasing the spring loaded locks and sliding the clamp over the serrated bar. Using the worm screw handle, tighten the clamp for a secure hold.