This 1 inch ball mount base features a 10mm mounting hole designed to attach to the motorcycle rear-view mirror or bolt head. The 1'' ball mount base made of 6061-T6 aluminum alloy material with CNC machining and iii grade hard anodized surface for durability and reliability in the most demanding environments. TPU over-molded ball head, anti-slip and wear-resistant. Compatible with RAM Mounts & BRCOVAN any B size 1'' ball double socket arm. Work for other devices with 1 inch swivel ball mounting pattern. The aluminum alloy mount base with 1'' TPU ball & 10mm mounting hole, suitable for mounting to motorcycle mirrors or bolt heads. Main body made of 6061-T6 aluminum alloy for durability and reliability in the most demanding environments. CNC integral molding, solid structure. Anodized surface treatment, smooth surface, durable. TPU over-molded ball head, non-slip and wear-resistant.