Description Features Specifications SL 27 Blowapart Click the corresponding item from the parts list below to order: 1 DSI 540-546 Split Ring, Stainless Steel 2 DSI 510-627 Neoprene Neck Dam, Small >DSI 510-628 Neoprene Neck Dam, Medium DSI 510-629 Neoprene Neck Dam, Large DSI 510-688 Neoprene Neck Dam, XL DSI 510-631 Latex Neck Dam, S/M DSI 510-633 Latex Neck Dam, M/L 3 DSI 510-450 O-ring, Neck Ring 4 DSI 560-078 Stepped Neck Dam Ring 5 DSI 530-024 Screw 6 DSI 530-022 Screw 7 DSI 530-220 Screw 8 DSI 540-115 Strap Plate 9 DSI 505-142 Pull Strap Assembly