JINSE Bipod Dragon Claw Clamp-on Folding Adjustable 9-11 Inches Bipod Wheel Size 11mm to 19mm High Tech Durable Aluminum Construction Adjustable leg length: 2 settings for different length, center height 9"-11" Foldable Arm can be folded up for easy carry and storage Clever Adjustment Wheel for Wide Range of Sizes from 11mm to 19mm Posi-Lock legs provide extremely solid, exceptionally accurate support