Riser height 8¼ ’’, C10 starter kit with connectors and top extra riser hook straps plus one 2 step extension with connectors # of steps / risers 12/12 & 12/13, Floor to Floor stair heights 96" to 101" (12 risers) & 105" to 110" (13 risers), Horizontal Run 94", All connecting fasteners with Allen key, parts list and assembly picture instructions included. Package Sizes & Weight 5"x14"x 64", 63 lbs. + one (5’’x7’’x 23’’, 15 lbs) American customers pay in US $. (no sales tax). All payments including with credit card mare made through Shopify/PayPal.