This iBOLT 25mm / 1-inch / B size Universal Marine Electronic Fish Finder Mounting Plate is made out of sturdy composite material with a rubber coated ball joint and is compatible with all industry standard 1 inch / 25 mm mounting arms. Ball joints are coated in a rubber material. COMPATIBILITY: Commonly used with IBBZ-33921 or IBBZ-33791 and other industry standard 25mm / 1 inch dual ball mounts / arms. Use with Bizmount series mounts or any other 1-inch / 25mm / B size industry standard compatible mount. FEATURES: a 30x38 mm industry standard 4 hole pattern (=AMPS) that will work with all industry standard AMPS adapter plates and hole patterns that are compatible with GARMIN GPSmap 7x12, 7x10, 12x2, 7x08, 9x2, STRIKER 9, Echo Map Plus 6”-7”, 9” and LOWRANCE HDS 9, 12 fish finder/ marine electronic equipment. INCLUDES: 25mm / 1-inch Composite Universal Marine Electronic Fish Finder Mounting Plate COMPATIBLE DEVICES: GARMIN GPSmap 7x12, 7x10, 12x2, 7x08, 9x2, STRIKER 9, Echo Map Plus 6”-7”, 9” and LOWRANCE HDS 9, 12 fish finder/ marine electronic equipment. This iBOLT 25mm / 1-inch / B size Universal Marine Electronic Fish Finder Mounting Plate is made out of sturdy composite material with a rubber coated ball joint and is compatible with all industry standard 1 inch / 25 mm mounting arms. Ball joints are coated in a rubber material. COMPATIBILITY: Commonly used with IBBZ-33921 or IBBZ-33791 and other industry standard 25mm / 1 inch dual ball mounts / arms. Use with Bizmount series mounts or any other 1-inch / 25mm / B size industry standard compatible mount. COMPATIBLE DEVICES: GARMIN GPSmap 7x12, 7x10, 12x2, 7x08, 9x2, STRIKER 9, Echo Map Plus 6”-7”, 9” and LOWRANCE HDS 9, 12 fish finder/ marine electronic equipment. FEATURES: a 30x38 mm industry standard 4 hole pattern (=AMPS) that will work with all industry standard AMPS adapter plates and hole patterns that are compatible with GARMIN GPSmap 7x12, 7x10, 12x2, 7x08, 9x2, STRIKER 9, Echo Map Plus 6”-7”, 9” and LOWRANCE HDS 9, 12 fish finder/ marine electronic equipment. INCLUDES: 25mm / 1-inch Composite Universal Marine Electronic Fish Finder Mounting Plate