Hoya HD PL-CIR Filters 52 mm.

• HARDENED GLASS, Hardened optical glass that has 4 times the breaking strength in ANSI standardized testing (ANSI Z80.3 : 2001) where a steel balls of varying size and weight were dropped from a height of 50 inches onto the glass, WATERPROOF / SCRATCH & STAIN RESISTANT MULTI-COATING, Specialized coatings that are not just water-proof to

update : 06/01/2563