ITEM NAME:Stainless Steel Boat Canopy Tube Knuckle Clamp Suits 0.87" OD Tube Hinged Description: Boat cover/ canopy knuckle clamp Fits 22mm/ 0.87 inch bar or tube outer diameter Round Hole Inner Diameter: Approx. 22 mm/ 0.87 inch Heavy duty marine 316 grade stainless steel casting Attaching canopy/ cover bars or frames to other bars/frames or deck hinges Dimension: Approx. 71 x 27 x 22mm/ 2.80 x 1.06 x 0.87 inch (L x W x H) Package Includes: 1 Piece Boat Canopy Tube Clamp Note: Please allow 1-3mm error due to hand test. The color may have different as the different display. THANK YOU FOR SHOPPING WITH US! Have a nice dayï ¼ ☠º.Boat cover/ canopy knuckle clamp. 1 Piece Boat Canopy Tube Clamp. Heavy duty marine 316 grade stainless steel casting. The color may have different as the different display.