1/2" Heavy Duty Side Grip Cleco Fasteners Click HERE for more information! USA Fittings 1/2" Heavy Duty Side Grip Cleco Fasteners Clamp Set of 5. Pack of 5 Side Grip Cleco Fasteners. 3/4" Gap x 1/2" Reach. Spring-loaded Side Grip Clecos apply a constant force without the need to drill any holes