Consists of two wooden hinged planks. Upper plank's angle of inclination can be adjusted from hori-zontel to vertical position. Two pulleys are fitted at the top of 30cm wide upper plank for reciprocal hand-shoulder exercises. Three sets of sanding hand blocks with different grasp holds are provided with the unit. Sanding blocks create resistance for exercises. Unit is finished in natural wood polish. specifications :upper plank. : 30cm x 100cm high with center divider with measuring tape. lower plank. : 30cm wide with 6 slots to hold upper plank for angle adjustment. sand blocks. : 3 pairs, with different grasp holds & clips to fix sand-paper. construction. : teak-wood constructed & finished in natural wood polish.