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QuartzLine filters are made of 99.9% pure fused-quartz glass for unrivaled durability and optical clarity. These single lens element filters produce a very low refractive index of just 1.46 and offer outstanding temperature stability. Combined with an over-engineered brass frame, QuartzLine filters thread on smoothly and are built to withstand your most rugged adventures.
Fused Quartz Glass
With low surface reflectivity, stability in extreme tempratures, & a refractive index of just 1.456.
Brass Frame Construction
Featuring a hand-crafted 4 part frame with smoother threading than aluminium.
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