Lateral stabilizer set for TANDEM plus BLUMOTION 563/9 drawer runners 10/Case 9"-27" drawer length, 54-1/2" wide cabinet. These lateral stabilizers for drawer runners work with the TANDEM plus BLUMOTION 563/9 runners. Lateral stabilizer set for TANDEM plus BLUMOTION 563/9 drawer runners 10/Case 9"-27" drawer length, 54-1/2" wide cabinet.