Abstract: A pair of spotter arms for use with a weight bench comprising a right and a left spotter arm having respective right and left spotter arm benches, each with a safety bar, a cross bar and a curl support bar, the safety bars, cross bars and a curl support bars each having a top surface forming a common plane, the spotter arms being coupled to a weight bench via two vertical supports captured by clamps extending from the curl support bars, and having six adjustable length legs for adjusting the height of the plane above the chest of a weight lifter on the weight bench, the spotter arm safety bars being positioned to interfere with an inadvertent and dangerous decent of a barbell bar, the safety bars being positioned to stop the decent of the barbell bar.