Riser height 6 7/8'', P4 starter kit with connectors and top extra riser hook straps plus two 2 step extensions with connectors # of steps / risers 8/8 & 8/9, Floor to Floor stair heights 53'' to 57" (8 risers) & 60'' to 64" (9 risers), Horizontal Run 93", All connecting fasteners with Allen key, parts list and assembly picture instructions included. Package Sizes & Weight 5"x14"x 34", 36 lbs. + two (5''x 7''x 26'' 17 lbs) American customers pay in US $. (no sales tax). All payments including with credit card mare made through Shopify/PayPal.