DM-275 Boom  DM-1 Gaff  1/2" slug shown Dimensions:  1.75 in. x 2.75 in. Weight:  .824 lb./ft. Ix =  .25 in^4 Iy =  .48 in^4 3/8" slug shown Dimensions:  2.00 in. x 2.25 in. Weight:  .533 lb./ft. Ix =  .189 in^4 Iy =  .235 in^4 77