Loon WB Head Cement SystemA super thin and odorless way to lock threads Loon WB Head Cement System, A medium thick water based head cement with applicator system for exact placement of cement. Never breathe toxic or smelly fumes again! Features: Medium thick head cement Odor free Water based Comes with applicator needle for precise applications 1 oz HOW TO USE Attach applicator needle to bottle or use applicator brush on lid. Apply desired amount to fly with applicator needle