System Adjustable Utility Bench Leg Curl Attachment: Included, Arm Curl Attachment: Not Included Dimensions: 51in L x 21in W x 19in H / Weight: 75 lbs. The only bench designed to fit into any Smith Machine, or Rack System. As the bench inclines, it slides back and under the bar Great dumbbell bench! Eighteen inches tall in flat position and only gets lower from there, making dumbbells easy to reach. Comfortable seat and seat back use 2in thick, high density foam, covered in black vinyl with upholstered back covers. Includes Leg Extension Curl Attachment to Strengthen and Tone your Legs