Great Planes Blind Nuts 1/4-20 (4) FEATURES: Metal construction with zinc plating to prevent rust from oxidizing on parts. The perfect mounting nut for hard to reach areas. Perfect for engine mounting landing gear cowls hatches etc. Comes in a Parts-Pak clear plastic box with resealable lid. One year quality guarantee.;INCLUDES: (4) Blind Nuts;REQUIRES: 5/16" Drill Size CA Glue (GPMR6002)