Features: UL listed group 2M RC , Center extension , Right hand only , Direct drive , 4 wheels , 3/8" spindle diameter

Features: UL listed group 1 , Square bolt , Right hand only , Indirect drive , Can be field configured for center, upper, or lower drive , 4 wheels , 3/8" spindle diameter

Features: UL listed group 1 , Upper extension , Indirect drive , Can be field configured for center, upper, or lower drive , 4 wheels , 3/8" spindle diameter , Right hand only

Features: UL listed group 1 , 4 wheels , 3/8" spindle diameter , Indirect drive

Features: UL listed group 2 , 4 wheels , 3/8" spindle diameter , Direct drive , Field-changeable handing , Center extension , Reversible