SQUARE D 9007MA11 Roller Lever Arm, 1.5 In. Arm L. More details: Roller Lever Arm, Arm Length 1-1/2 In., Roller Dia. 0.75 In., Roller Width 0.25 In., Arm Material Cast Zinc, Roller Material Oil Impregnated Sintered Iron, Arm Depth 0.31 In., Arm Width tapered, Roller Position Front, For Use With Mfr. No. 9007C, 9007AW