Solar Tackle Lock and Load Indicator Head. Precision engineered and compatible with all Solar indicator accessories, past and present, as well as many others. Features: - Building on 20+ years of indicator design - Made in the UK - Lock and Load heads are cleverly designed with 5, internal drag weights - Time-served, micro-adjustable line clip - Isotope slot - Interchangeable end caps (top and bottom) for customisation - Compatible with all Solar indicator accessories, past and present, as well as many others