This assembly has a base that mounts to either a 7/8 or 1 inch rail. The 1.125″ carbon fiber verticalpole is 60″and Aluminum Cross Shaft is 14″.The components are anodized aluminum with stainless steel ratcheting handles and stainless steel hardware. The 12″ handle can pivot 180 degrees for easy storage and can be used at any angle. The handle has a comfortable foam grip.The transducer is clamped on the end of the pole with the bracket that comes with the transducer.