Product Name: Left Hand Thread Bolt; Package Content: 4pcs x Left Hand Thread Bolt; Main Color: Black. Material: 45# Steel; Weight: 34g. Dimension: 13 x 21mm / 0.51" x 0.83"(Max.D*L); Hex Width: 9.8mm / 0.39". Thread Size: M8 x 16mm / 0.31" x 0.63"(D*L); Coating: Black Oxide Plated. Grade: 8.8; Head Type: Hex Head.
