• Grip Tight Circuit Breaker Lockout • Secure and simple mounting for a solid lockout. Grips tight with simple thumb turn and clamping handle. The Grip Tight Circuit Breaker lockout offers superior holding power. Durable construction with powder coated steel and reinforced polymer allows operation in harsh environments and both devices accept all American Lock® and Master Lock® safety padlock shackle and lockout hasp diameters.