Product Features Universal Heavy-duty base for motion devices For mounting to any flat surface Gusseted and welded heavy gauge steel Black powder coat finish Lifetime warranty Made in USA Includes: HDM base plate and stiffener plates Mounting hardware: flat washers (8), lock washers (8), 1/4- 20 x 3/4" screws (4), 1/4-20 x 1 1/4" screws (4) For a complete Solution: 11" slide out locking swing arm with motion adaptor: C-MD-112 Rugged keyboard mount and adapter: C-KBM-202 Rugged universal cradle: UT-301 Product Specs Dimensions: 2.0" (5.0 cm) h x 4.0" (10.2 cm) w x 5.0" (12.7 cm) l User Manuals and Installation Instructions View C-HDM-135 Manual Availability, Lead Times and Shipping Please note that ALL Gamber-Johnson and Havis mounting and docking equipment typically takes at least a week to ship. Lead times can often be 3-6+ weeks or longer depending on the exact items purchased. The following is guidance only and changes frequently. Basic mounting hardware such as plates or poles: 1-2 weeks to ship Vehicle-specific kits or more complex mounting solutions: 2-4 weeks to ship Powered docking stations with port replication: 4-8+ weeks to ship. Please call, email, or chat with us to discuss lead times as it specifically relates to your needs. Expedited shipping methods selected at checkout do not speed up lead times but rather reduce transit time when an order ships.