Galvanized steel construction provides the user with a fastener that is weather resistant. 5/16” staple leg length, 3/8” crown width. Staples work with Stanley TR110, TR150, TRE550, PHT150 and PHT250, Dewalt DWHTTR130LH, DWHTTR350, DWHTTR410, DWHTHT450, arrow T50 and HT50. Pack of 1,250.