Knurl Nut (manual) Draw Cleco Fasteners, 1/8" diameter-red body I.D, requires a #30 drill bit hole, for holding multiple sheets together while layup and fitting of panels and edges, holding to tack weld, different than a cleco the clamp tension is manually adjustable by user, great when you have limited access our when you have sealent that you want to squeeze uniformly. 2 1/4" O.A.L, 0-1/4" max. grip or material thickness. Only offered by Dagger Tools. Included in DT-FAS-1 kit