Compatible with all Solar indicator chains, arms and accessories, and most others out there as well Titanium indicator heads are cleverly designed and engineered in the UK, with this model being made from P1 stainless components and the latest injection moulding technology. Featuring an integral, adjustable line clip (simply twist the stainless collar at the base of the indicator head to adjust the line clip tension) the Titanium heads can be perfectly tailored to any situation and angling preferences. Solar with a colour-coded plastic collar to place under your back rest or alarm. Compatible with all Solar indicator chains, arms and accessories, and most others out there as well. Features an isotope slot to fit an isotope 25mm x 3mm. Carbon heads fit an isotope 15mm x 3mm Weight = 9g