The bottle is made of high quality plastic, soft and squeezable. The tips are made of stainless steel, and rustproof. 30 pcs Bottles (30ml),30 pcs Storage Caps, There are 4 sizes of glue applicator needle tips, including 14ga, 16ga, 18ga and 20ga(15 tips of each size), which can meet your various crafts needs.Choose the proper size according to the thickness of your fluid. This fine-tip bottle is ideal for glue, but can also be used for paint, stains, oils, ink and more. These empty applicator bottles can be filled with paint, glue and other craft supplies. Great for , art projects or home and you could accompany kids to make some crafts and projects. The bottles needle tips make application precise and clean. Needle oiler bottles for door locks, hinges, clocks, sewing machines, fishing reels, bikes, cleaning with oil, optical repair work, coconut oil, .