SPOTNAILS 20 Gage 1/2" Crown x 1/2" length Fine Wire Galvanized Staples Duo-Fast 50 Series (5,000 per box) For Use In: Spotnails: 35001, PS5016, JS5016(LN), BS5016AF, BS5018, DS5016; Duo-Fast: SS5020, SS5020S, SS 5020 DLAF, HT550, CT-859; BeA: 95/14; Kihlberg: 64; Fasco: F1A 50-16 Applications:Carpeting, Housewrap Installation, Insulation Installation, Poly Sheeting, Roofing, Roofing Felt Installation, Tar Paper