Riser height 6 7/8'', P4 starter kit with connectors and top extra riser hook straps plus one 2 step extension with connectors: # of steps / risers 6/6 & 6/7, Floor to Floor stair heights 40'' to 43" (6 risers) & 47'' to 50" (7 risers), Horizontal Run 71", All connecting fasteners with Allen key, parts list and assembly picture instructions included. Package Sizes & Weight 5"x14"x 34", 36 lbs. + one (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.