60 Day 100% money back guarantee. Thorlabs illumination kit featuring an LEDD1B constant-current LED driver paired with an M455L3 blue (455 nm) high-power LED in a finned heatsink module. Optics include a 1" collimator lens in SM1 hardware with an SM1V05 adjustable lens tube for axial focus, an SM1RC retaining ring, a spacer, and an adjusting nut. Also included is a 15 V 1.4 A power adapter and cabling as pictured. No assumptions are made about calibration or performance; no further testing performed. Ships from Carol Stream IL USA. Keyword Block: thorlabs, ledd1b, m455l3, 455nm, blue led, led driver, sm1v05, sm1, collimator, microscopy, machine vision, illumination, optics, bnc trigger