Specifications include, but are not limited to: Backplate assembly Designed to fit specific motor grader models, backplate is a gusseted, box-reinforced l" weldment, with four (4) 1 ¾" solid pins locked into l ½" x 5" welded pin bosses. Four Lift Arms Two (2) 1 ¼" x 4" upper with I ¼" x 22" (long) stiffener, and Two (2) 1 ½" x 5" lower with 4" x 4" x 3/8" tubular stiffener, includes 3 ¾" welded pin bosses. Lift Cylinder Shall be a 5" bore, heavy-duty, double acting hydraulic cylinder mounted in a gusset reinforced, welded tubular assembly. The 2" chrome plated cylinder rod has a 14" stroke. Balderson Style or Approved Equal Male Head Top pick-up tube shall be constructed from 4" OD x ½" thick wall pipe, 33" long. Pipe shall be welded between (2) l" x 5" x 37 ½" steel side plates. Middle cross support shall be 5" x 3" x 3/8" thick tubular steel. Top pick-up tube and middle support shall be additionally reinforced by a structural weldment consisting of½" thick steel plate and 1" x 5" steel side plates. Bottom cross support tube shall be 4" x 4" x 3/8" thick tubular steel. Two (2) inner and two (2) outer ears shall be of¾" thick steel plate. Ears shall have fully we lded 3" bosses for manual locking-pin s.