SPECIFICATIONS: Product Name: Locking Clip Material: Plastic Size: 3/8″ Package Content: 50Pcs 1/4 inch clips 50Pcs 3/8 inch clips. Package Include – There are 50pcs 1/4 “ blue locking clips and 50pcs 3/8 “ clamps, Enough quantity for you to use or replace. Material – The locking clip clamps are made from safe, non-toxic materials(POM). Easy To Use – Place the clamp opening behind the clevis and press down gently and it snaps into place, securely and safely. Applications – Apply to Reverse Osmosis Water System and Housing In Line Filters ETC. COMPATIBLE WITH – Fits standard 1/4″ or 3/8″ Quick Fitting used on most RO systems .