uxcell M8x60mm Stainless Steel Hex Nut Sleeve Anchor Expansion Bolts 4 Pcs Product Name: Expansion Bolt; Material: 304 Stainless Steel Weight: 133g; Package Content: 4 Pcs x Expansion Bolt Main Color: Silver Tone; Sleeve Tube Size: 40mm/1.6"(L1) Overall Length: 60mm/ 2.4"(L); Sleeve Diameter (D): 11.5mm/0.45" Thread Size: 8mm/ M8(d); Punch Diameter: 11.7mm/0.46"(d1)