174-6688, Ruland, Ruland Shaft Collar, One Piece, Clamp Screw, Bore 16mm, OD 30mm, W 8mm, Stainless Steel, Brand Ruland, Shaft Diameter 16mm, One/Two Piece One Piece Ruland Shaft Collar, One Piece, Clamp Screw, Bore 16mm, OD 30mm, W 8mm, Stainless Steel