Twod Tactical Rifle Bipods Adjustable 6-9/6.3- 6.9 inch Fit Picatinny Rail with Extra Adapter Adjustable Bipod Leg: By pushing button on each bipod leg, Twod Bipod can be folded together and moved into a horizontal rest position. Fast and secure adjustment mechanism doesnt wobble and allows for quick height adjustment. Low Profile for Versatile Applications: The unique internal spring system on the Twod Tactical Bipod is both low profile and quiet. This extra low bipod features adjustment from 6.3''to 6.9''for complete stability. Clever Two Mountings: Twod Bipod features a universal design that offers a Picatinny mount and a bi-pod adapater for mounting on most rifle configuration. Stabile Construction: Twod Bipod feature solid anodized aircraft-grade aluminum construction with rubber feet and provides excellent stability and ensure a secure hold on most surfaces. Heavy duty and lightweight. What you get: 1PC 6.3- 6.9 inch Twod Tactical Adjustable Rifle Bipod; Other tools you will need to make adjustments; Limited lifetime warranty and friendly customer service.