Made of T6-6061 Aluminum, Schaefer's Big Boat round batten receptacles include a lightweight, hardcaoat finished backing plate. All models allow for easy attachment to other track systems. The 382-12 fits 12 mm studs for Schaefer slides or competitors systems. Removable nosepiece allows for front-end loading of full battens. Fully adjustable ensures proper batten tension. Fits round battens from 11/16"(17mm) - 1.25" (31mm). Adjustment range 6.88" (175mm), Length 11.75" (296mm) Width 3.72" (94mm)