SPACER ROUND NYLON 0.25IN X 3.175MM; Spacer Type:Round; Spacer Material:Nylon 6.6 (Polyamide 6.6); Outer Diameter:6.35mm; Inner Diameter:3.556mm; Overall Length:3.175mm; Product Range:-; Body Diameter:0.25"; Bore Size:3.658mm ;RoHS Compliant: Yes