.417" Crown, 1/2" Leg Length. Fits Surebonder models: 5690, 5600, 5685, 5800, 5900N, 9600A. Arrow T50; Stanley TR110, TR150HL; Powerfast (Swingline) 31690, 31890; Ace Hardware 2014413; Craftsman 68517, 68492, 68515; Black & Decker 5700. Use for canvas, ca