Adapter Automatic Retractor Holder 3.50x1 7/8x0.75in. Overall length: 3.500 inches nominal Iii part name assigned by controlling agency: adapter automatic retractor holder 3.50x1 7/8x0.75" thd crs Material: steel, corrosion resisting Special features: adapter; 8.89 by 4.76 by 1.90 cm; w/wing nut handle; threaded shaft, swivel pad; for use to attach a retractor to the automatic retractor, 6515-01-100-5560 Overall width: 1.250 inches nominal