100% Genuine 18k solid yellow gold bolt clasp. 
 18ct Yellow Gold bolt rings each measure approximately 6.0mm in diameter. 
 Bolt rings are highly popular jewellery findings which are regularly used in jewellery making to fasten chains, necklaces, pendants and bracelets.  
 These 6.0mm yellow gold bolt rings are supplied open , meaning that the jump ring attached to one side of the bolt ring is open. All you need to do is pull them open and then close again easily.

18k are hallmarked 750

9k are hallmarked 375

Please ask if you have any question.
  

 About my items:
 All items I sell are real solid gold. I get the items tested by a jeweller before I list them on eBay. I do not sell low quality fake items. 

Useful information:
There are different types of gold jewellery on sale on eBay. Buyers need to be very very careful about understanding what they are buying.Gold Plated or filled or layered or rolled items are not really gold and does not have much gold value. They are hard to resell. Solid gold jewellery contains high quantity of gold and will always resell even when they are damaged. Buyers should always ask the sellers if the item they are interested in is real solid gold. Most of the solid gold items are stamped which show the content of gold. 375 stamp means 9ct solid gold. 750 or 18k are solid 18 carat gold. 585 or 14k represent 14 carat solid gold.Now the days there are also lots of items in eBay which are stamped even when they are not solid gold. Therefore always ask the seller before you pay for the item. After you receive the item always get them checked by a professional. Please contact me if you would like to know anything about gold hallmarks or anything else. I'm always happy to help