This 90mm non-sticky suction base attaches easily to car or truck windshields with a one-touch lever. SPBASE20MM features a heavy-duty windshield suction base with a 20mm (0.78 inch) ball head, which is compatible with Arkon Heavy-Duty Pedestals, including Models HD001, HD002, HD003, HD004, HD005, HD006, HD008, and HD010. This suction base is also compatible with other third-party 20mm compatible pedestals. This model consists of the suction base only; pedestals and device holders are not included.