Mid-Rail Chock/Cleat Stainless Steel 70-74 for 1" T-TrackSchaefer 70 74 Investment Cast 316 Stainless Steel Chock Cleat.Easy adjustment with the simple lifting pin. Please note, Schaefer T Track Chock cleats will fit Schaefer T Track measuring 1" wide, 3 8" overall height, 1 8" "T" thickness and a base width of 1 2". They will not fit earlier versions of T Track or some competitors models.L 6 1 2" (165 mm), ID 1 7 16" (180 mm), Line Size 1 2" (13 mm), Track 1" x 1 8" (25 mm x 3 mm), Pin. Size 1 4" (6 mm),