Riser height 8¼ ’’, C10 starter kit with connectors and top extra riser hook straps plus two 2 step extensions with connectors # of steps / risers 14/14 & 14/15, Floor to Floor stair heights 113" to 118" (14 risers) & 121" to 126" (15 risers), Horizontal Run 109", All connecting fasteners with Allen key, parts list and assembly picture instructions included. Package Sizes & Weight 5"x14"x 64" 63 lbs. + two (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.