Compatible with the following instruments:ST70* ST60+ ST290Compatible hull material: Wood and FiberglassFrequency: 200 kHzCable: 45ft cableHole diameter for installation: 2"Note: E66023 Fairing block sold separately.*Using with ST70 requires purchase of ST70 Speed Pod and ST70 Depth Pod, sold separately. - cis2:mm5mnJlm -Specifications: Temperature: Yes; Speed Included: Yes; Mounting Style: Thru-Hull; Chirp: No; Cable Length (Feet): 45'; Box Dimensions: 4"H x 8"W x 10"L WT: 5.7 lbs; UPC: 723193260432;