GrovTec US Snap Hook Multi Adaptor Set Black. Use supplied allen wrench to depress plunger and slide into base. Snap hook Multi-Adaptors conveniently convert push button bases to accept snap style hooks. Specifications for GrovTec US Snap Hook Multi Adaptor Set: Manufacturer: GrovTec US Color: Black Fabric/Material: Steel Gun Type: Rifle Gun Model: Universal Features of GrovTec US Snap Hook Multi Adaptor Set Fits all standard push button swivel bases. Only for full rotation bases do not use on non-rotating or limited rotation mounts. Package Contents: GrovTec US Snap Hook Multi Adaptor Set 2 Multi-Adaptors 2 Stainless Steel Bases GrovTec US GTSW281: Snap Hook Multi Adaptor Set Black