3 8 in. Drive 13 in. 90 Tooth Dual Material Locking Flex Head Teardrop Ratchet Sliding Closet 15 pieces set 15 pieces set and sag resistance Sold by the piece with each order individually packed and shipped Install direct to ceiling with Metallaire cone head nails #5400NAM (sold separately) Cornices are available (sold separately) in the same finish that can complement and accentuate the exquisite detail of your Metallaire ceiling Border filler panels are available (sold separately) that can be used around the edge of the room when less than full panels are needed Has a Class A fire rating Metallaire is available in 5 finishes 90 tooth gear delivers a 4° swing arc to turn a fastener in tight confines ) 13 Manufacturer Warranty Manufacturer Limited Lifetime Warranty