The Sto-Fen OM-SB16 Omni-Bounce is designed to be used with Nikon SB-16 Flash, and Achiever 632 Flash.This Omni Bounce is preferred by many as it helps produce a diffused bare bulb effectAn even coverage is offered throughout the frame when used with 15mm to 200mm 35mm format lensesApart from UNI, the Sto-Fen OM-SB16 Omni-Bounce offers an easy fit with other flashesThis compact diffuser is easy-to-carry as it comfortably fits into your gadget bag or pocket