ND series products:
ND2 / 4/8/16/32/64/512/1000/4000/65000
BST ND low reflection, low color partial, uniformity is good, double the same
specification
Round: φ37 / φ40.5 / φ42 / φ46 / φ52 / φ58 / φ62 / φ72 / φ77 / φ82
/ Φ86 / φ105 / φ150mm
Square: 100 * 100mm / 100 * 125mm / 150 * 150mm / 170 * 170mm
USE YOUR LOCATION 
DISCOVER 