SVBONY's SV226 magnetic filter drawers come in M42 (1.25" and 2") and M54 (2") versions, with the SV226P for the SV238 OAG, a 2" slider pack and drawer kits. The SV133 manual 5-position filter wheels, in 1.25" and 2", hold several filters for switching by hand. Part of Filter Drawers, Sliders & Holders.