uxcell 10pcs M6 Plastic Bolt Nut Caps Inner Threaded Protection Covers Black Thread Size: M6; Product Name: Nut Cap Material: Nylon; Weight: 7g Package Content: 10 pcs x Nut Cap; Main Color: black Inner Diameter(D): 6mm(0.236"); Width(A): 9.8mm(0.386") Total Height(H): 11.9mm(0.469"); Thread Pitch: 1.0mm(0.039")