UV Nail extension kit uses salon proven technology normally only available in nail salons. Kit includes, UV treatment light, 3 stage buffers, nail clippers, finishing wipe, acetone, grit file, nail primer, sanding block, cuticle oil, nail glue, hoof stick, UV gel, 100 nails and step by step DVD. Battery operated - 4 x AA batteries (supplied). Mains powered (adaptor not supplied). Manufacturer's 2 year guarantee.