The Custom 2" Square Ear Front Bag is for use on a mechanical front rest. This bag was designed to use with flat forends measure 2" wide. Our bags come standard filled with Regular Sand weighing 1.2 lbs. The bag measures approximately 2" inbetween the ears and has a base size of 2 1/4" W x 5 3/4" L x 2-1/4" H, 1-1/8" from base to where forend rests and 1-1/8" tall ears. Made in the U.S.A 100%.