Arrow fastener T50 3/8in. ProPack Staple. Genuine Arrow T50 staples. 3/8" crown width. Fits TT50, T50X, T50R.E.D., ET50R.E.D., T50ELITE, T50, T50PBN, ETF50BN, ET501, HT50, HT55, 5700, 8004. Designed and Assembled in USA. 3/8" crown width x .050 wire. 2 boxes of 5,000 staples per box.