17mm x 0.75 to C Mount Step-Up Adapter Ring Adapter Ring Adapter Step Ring Mount Adapter

Product Description

Thread Size Conversion Converts lens threads (17mm×0.75) to C Mount for filters, hoods, or lens adaptation.

Step-Up Ring First number: Lens thread size (17mm)


Second number: Filter size (C Mount/25mm).


Step-Down Ring Attaches smaller accessories to larger lenses (reverse function).


Ultra-Thin & Lightweight Design Positions filters closer to lens optics → Reduces vignetting.


Corrosion-Resistant Metal Anodized aluminum alloy for outdoor/harsh environments.


Zero-Wobble Precision Threads CNC-machined threads with tolerance ≤±0.01mm.

* All PayPal Payments must be Confirmed (Shipping and billing addresses must match)Payment is required within 7 days from the date of the auction ending
A non-payment dispute will be automaticcally opened if full payment is not received after 14 days of auction.
* We will ship your item(s) within 5 working day by Speedpak or China Post.
* We can also provide express post by DHL/FEDEX(5-7 days) . The cost is higher than standard postage, about $ 20 or higher. If you want post by EMS or DHL, please contact us.Very reasonalbe shipping fee will be charged.
* Return is accepted within 30 days after the buyer's receiving the item. (Excluding contrived damagement or misusage).100% money-back Guaranteed!

* All product will be tested in 100% before delivery.If the item is defected by the processing of postage, Buyer has up to 30 days from date of receipt for  exchange of a new one. All shipping charges for returned products are to be paid by the seller ,Please contact us for the return address