Check the listing for details. RMS-M42 Flange Adapter RMS Thread to M42 x1 mm for microscope objective. Condition: New. Listed at 10.00 USD. - It has a female 36 TPI (thread per inch) thread at one end, which will hold any microscope objective with a standard RMS (Royal Microscopy Society) thread. - At the other end, it has a standard male M42 x1mm male thread to connect to your 42mm adapter. - Material: Aluminium - Height Size: 5mm - Inside Thread: RMS - Outside Thread: 42mm X1mm - With flange - It has a female 36 TPI (thread per inch) thread at one end, which will hold any microscope objective with a standard RMS (Royal Microscopy Society) thread. - At the other end, it has a standard male M42 x1mm male thread to connect to your 42mm adapter. - Material: Aluminium - Height Size: 5mm - Inside Thread: RMS - Outside Thread: 42mm X1mm - With flange Package - 1 x Lens Adapter NOTE: a. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. b. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying.