Our landmine attachment for barbell is uniquely designed with non-slip technology that increases friction with the floor, ensuring stability during your workout and allowing you to focus on posture and movement The landmine attachment is made of strong natural rubber that is odorless and strong enough to withstand the weight of a barbell. ?4 x 4 x 6.7 inches Rubber barbell landmine is suitable for all kinds of floors, including concrete floors, football field turf, rubberized gym floors, wooden floors, and so on. Our barbell landmine attachment is designed specifically for International Olympic barbell bars (2" /50 mm). No additional tools are required to attach this barbell landmine attachment; just insert the 2-inch Olympic barbell into the sleeve and start working out The landmine barbell allows you to perform core exercises such as kneeling shoulder presses, rotational exercises, lateral lunges, arm rows, and more.