Bluff’s Spring Loaded Dock Plate (SL Plates) is an ideal solution for loading applications involving hand trucks and dollies, and is typically used by customers in bakery, beverage and snack distribution industries. The SL Plate is vertically stored and easily actuated by hand or foot. Available options include kick plate covers and traction tape. Not for use with powered equipment. Each SL Plate is site-specific and requires a completed worksheet to design - - call for pricing. Manufacturing time 6 working days. Patent # US D633,684 S. FOB Shipping Point.