100mm Graduated Neutral Density Kit #6 (3 Filter ND Graduated Soft Edge Kit) This 100mm filter kit is usable with Hitech 100mm holder systems or any 100mm holder system Soft edge grads have a smooth transition from clear to ND Made from the highest quality optical resin Made in the UK on advanced computer-controlled manufacturing equipment Compatible with Canon, Sony, Nikon, Tokina, Sigma, Zeiss, Panasonic, Tamron, Samyang, Rokinon and other lens brands