UM Jewelry His and Hers Stainless Steel Crystal Lock Key Puzzle Heart Pendant Couple Necklaces Unit:1Pair(2Pcs),Material:Stainless Steel and Crystal Pendant Size:Lock 16.7mm*21.8mm/0.66"*0.86",Key 22mm*32.5mm/0.87"*1.28" Highly recommended necklace for couples looking for Valentine's day gifts Feature:Anti-allergic,Never fade,High Polished Comes with one black velvet bag,60 days money back guaranteed