1 4 in., 3 8 in., and 1 2 in. Drive 72 Tooth Extendable Flex Head Ratchet Set (3 Piece) Bath Toilets The Schlage Siena Aged Bronze The Schlage Siena Aged Bronze Passage Door Knob with Wakefield Trim is perfect for use on hall and closet doors where locking is not needed A: This flooring is installed using a click lock mechanism USS Number of Pieces 3 Individual Set Set Features Quick Release Returnable 180 Day Tools Product Type Hand Tool Hand Tool Type Other Ratchet Socket Set Manufacturer Warranty Lifetime Limited Warranty 72 tooth mechanism inside the head of each ratchet is a 72 tooth reversible ratcheting mechanism that only needs a 5° arc