This is a pair of GrimRacer Cowl Locks for boats. FEATURES: GrimRacer Cowl Locks work well on all types of RC boats. These cowl locks snap down tight and easily release with just a quick 1/4 turn. Gray metal studs (The piece that will go thru the cowl) Spring steel receptacle (The piece that mounts in the boat) Comes with receptacle mount for boats that lack a good receptacle mounting location. INCLUDES: Two 1/4 turn metal studs Two rubber keepers Two spring steel receptacles Two aluminum 90° receptacle mounting bases Four 2x8mm screws Four 2mm nuts Photo-illustrated instruction sheet REQUIRES: 1/8" and 2mm drill bits for making necessary mounting holes SPECS: Stud length: 1/2" (13mm) Stud diameter: 1/8" (3.5mm) Receptacle length: 3/4" (19mm) Receptacle width: 3/8" (10mm) Receptacle height: 1/4" (6mm) Mount length: .78" (20mm) Mount width: 9/16" (14mm) Mount height: 7/8" (22mm)