Rugged rubber-grip case, blade-lock, brake and auto return. Double-riveted tip with wraparound reinforcement. Durable, coated blade. Measures both internal and external lengths. Easy to read graduation marks with highlighted joist marks every 16″. Wrist strap and belt clip. Rugged rubber-grip case, blade-lock, brake and auto return. Double-riveted tip with wraparound reinforcement. Durable, coated blade. Measures both internal and external lengths. Easy to read graduation marks with highlighted joist marks every 16″. Wrist strap and belt clip.