Build a beautiful, indestructible, heirloom-quality slab bench or coffee table—just add wood. Includes four joinery pieces and 16 T55 torx cap nuts, and a torx wrench. The carriage bolt size is 5/16. You supply your own bolts, as the wood thickness varies. Pick up in San Rafael, or I can ship it to you for an additional $20. If you prefer to have the cap-nuts hidden from the surface, I'll supply 8, 5/16 "inserts and eight cap-nuts to secure the legs. Ideal bench length is 42 to 60 inches. Local sales tax applies.