The 414-PB from Sioux Chief is a 5/16” x 2-1/4” Long Snap-It Solid Brass Closed Bolts Kit. They are used to secure the toilet bowl to the closet flange. Kit includes (2) 5/16" x 2-1/4" long solid brass closet bolts, (2) nickel-plated steel acorn nuts and (2) zinc-plated washers. Bolts feature snap off tip - no need to cut. Captive washer keeps bolt upright and prevents it from falling.