uxcell M6 Female Thread T-slot Sliding Block Slot Nut 20pcs Silver Tone Product Name: T-slot Nut; Material: Metal Weight: 151g; Package Content: 20 x T-slot Nut Overall Size: 16 x 16 x 6mm/0.63" x 0.63" x 0.24"(L*W*H) Main Color: Silver Tone Thread Size: M6