Heavy duty step attachment for your 3" x 3" power rack – Whether you're doing step-ups, box jumps, hip thrust, bench dips, or Bulgarian split squats, you can trust that this step will stay firmly in place. Patent Pending. Designed exclusively to fit XMARK Viper Racks. Why buy your Viper Multi-Purpose Step Attachment from Peak Flow Fitness Authorized XMARK Dealer — Full manufacturer warranty on every order, every time. Free Shipping over $999 — Most orders ship free anywhere in the lower 48 states (some exclusions apply). Best Price Guarantee — Find it cheaper elsewhere? We'll match the price. 0% Financing Available — Use Shop Pay Installments at checkout to break up your payment. 30-Minute Response — Reach out to [email protected] or call (646) 921-5221 Mon–Fri 9 AM–9 PM EST. We reply within 30 minutes. Shipping & Delivery Orders ship from the manufacturer warehouse within 1–3 business days. Standard delivery is 5–10 business days for parcel orders; freight items (larger equipment) deliver in 7–14 business days with curbside drop-off. Tracking is emailed automatically once your order ships. Warranty & Returns Every product is backed by the full manufacturer warranty plus shipping insurance on every order. If anything arrives damaged, contact us within 48 hours and we'll handle the replacement directly with the supplier. See our 30-day return policy for details. Questions? Email [email protected] or call (646) 921-5221. Mon–Fri 9 AM–9 PM EST. We respond within 30 minutes during business hours.