Usage Tips:[Professional] The sensor mounting plate is specially designed for XNT sensors, suitable for models XNT 9 20, for XNT 9 20 T, for XNT 9 QB 90 T, for XNT 9 QB 90, for XNT 9 SI 180 T.[Compatible] for 7400931 XNT Transom Mount Hardware Kit is also compatible with fish detection sensors. Compatible with: for XHS 9 HDSI 180 T, for HELIX 12 SI GPS, for HELIX 10 SI GPS, for HELIX 9 SI GPS, 1199ci SI GPS, 999ci SI GPS, 1198c SI GPS, 998c SI GPS.[] The sensor mount bracket kit is made of ultra- material, which is really in the ocean or lake. Long service life, you can buy with confidence.[Advantages] The sensor mounting kit helps to provide a stable installation position, enabling you to obtain more accurate detection data. Simple and convenient installation, it can be completed in a few minutes, guaranteeing you to enjoy fishing and outdoor life better[Service] If you encounter problems during use, please contact me immediately, we provide you with .Colour:BlackMaterial:PlasticPackage Contents:1 * transducer mount litOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.